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How to use genCacheExpression method in Playwright Internal

Best JavaScript code snippet using playwright-internal

compiler-dom.global.js

Source:compiler-dom.global.js

...1883          case 19 /* JS_CONDITIONAL_EXPRESSION */:1884              genConditionalExpression(node, context);1885              break;1886          case 20 /* JS_CACHE_EXPRESSION */:1887              genCacheExpression(node, context);1888              break;1889          /* istanbul ignore next */1890          default:1891              {1892                  assert(false, `unhandled codegen node type: ${node.type}`);1893                  // make sure we exhaust all possible types1894                  const exhaustiveCheck = node;1895                  return exhaustiveCheck;1896              }1897      }1898  }1899  function genText(node, context) {1900      context.push(JSON.stringify(node.content), node);1901  }1902  function genExpression(node, context) {1903      const { content, isStatic } = node;1904      context.push(isStatic ? JSON.stringify(content) : content, node);1905  }1906  function genInterpolation(node, context) {1907      const { push, helper } = context;1908      push(`${helper(TO_STRING)}(`);1909      genNode(node.content, context);1910      push(`)`);1911  }1912  function genCompoundExpression(node, context) {1913      for (let i = 0; i < node.children.length; i++) {1914          const child = node.children[i];1915          if (isString(child)) {1916              context.push(child);1917          }1918          else {1919              genNode(child, context);1920          }1921      }1922  }1923  function genExpressionAsPropertyKey(node, context) {1924      const { push } = context;1925      if (node.type === 8 /* COMPOUND_EXPRESSION */) {1926          push(`[`);1927          genCompoundExpression(node, context);1928          push(`]`);1929      }1930      else if (node.isStatic) {1931          // only quote keys if necessary1932          const text = isSimpleIdentifier(node.content)1933              ? node.content1934              : JSON.stringify(node.content);1935          push(text, node);1936      }1937      else {1938          push(`[${node.content}]`, node);1939      }1940  }1941  function genComment(node, context) {1942      {1943          const { push, helper } = context;1944          push(`${helper(CREATE_COMMENT)}(${JSON.stringify(node.content)})`, node);1945      }1946  }1947  // JavaScript1948  function genCallExpression(node, context) {1949      const callee = isString(node.callee)1950          ? node.callee1951          : context.helper(node.callee);1952      context.push(callee + `(`, node, true);1953      genNodeList(node.arguments, context);1954      context.push(`)`);1955  }1956  function genObjectExpression(node, context) {1957      const { push, indent, deindent, newline, resetMapping } = context;1958      const { properties } = node;1959      if (!properties.length) {1960          push(`{}`, node);1961          return;1962      }1963      const multilines = properties.length > 1 ||1964          (1965              properties.some(p => p.value.type !== 4 /* SIMPLE_EXPRESSION */));1966      push(multilines ? `{` : `{ `);1967      multilines && indent();1968      for (let i = 0; i < properties.length; i++) {1969          const { key, value, loc } = properties[i];1970          resetMapping(loc); // reset source mapping for every property.1971          // key1972          genExpressionAsPropertyKey(key, context);1973          push(`: `);1974          // value1975          genNode(value, context);1976          if (i < properties.length - 1) {1977              // will only reach this if it's multilines1978              push(`,`);1979              newline();1980          }1981      }1982      multilines && deindent();1983      const lastChar = context.code[context.code.length - 1];1984      push(multilines || /[\])}]/.test(lastChar) ? `}` : ` }`);1985  }1986  function genArrayExpression(node, context) {1987      genNodeListAsArray(node.elements, context);1988  }1989  function genFunctionExpression(node, context) {1990      const { push, indent, deindent } = context;1991      const { params, returns, newline } = node;1992      push(`(`, node);1993      if (isArray(params)) {1994          genNodeList(params, context);1995      }1996      else if (params) {1997          genNode(params, context);1998      }1999      push(`) => `);2000      if (newline) {2001          push(`{`);2002          indent();2003          push(`return `);2004      }2005      if (isArray(returns)) {2006          genNodeListAsArray(returns, context);2007      }2008      else {2009          genNode(returns, context);2010      }2011      if (newline) {2012          deindent();2013          push(`}`);2014      }2015  }2016  function genConditionalExpression(node, context) {2017      const { test, consequent, alternate } = node;2018      const { push, indent, deindent, newline } = context;2019      if (test.type === 4 /* SIMPLE_EXPRESSION */) {2020          const needsParens = !isSimpleIdentifier(test.content);2021          needsParens && push(`(`);2022          genExpression(test, context);2023          needsParens && push(`)`);2024      }2025      else {2026          push(`(`);2027          genCompoundExpression(test, context);2028          push(`)`);2029      }2030      indent();2031      context.indentLevel++;2032      push(`? `);2033      genNode(consequent, context);2034      context.indentLevel--;2035      newline();2036      push(`: `);2037      const isNested = alternate.type === 19 /* JS_CONDITIONAL_EXPRESSION */;2038      if (!isNested) {2039          context.indentLevel++;2040      }2041      genNode(alternate, context);2042      if (!isNested) {2043          context.indentLevel--;2044      }2045      deindent(true /* without newline */);2046  }2047  function genSequenceExpression(node, context) {2048      context.push(`(`);2049      genNodeList(node.expressions, context);2050      context.push(`)`);2051  }2052  function genCacheExpression(node, context) {2053      const { push, helper, indent, deindent, newline } = context;2054      push(`_cache[${node.index}] || (`);2055      if (node.isVNode) {2056          indent();2057          push(`${helper(SET_BLOCK_TRACKING)}(-1),`);2058          newline();2059      }2060      push(`_cache[${node.index}] = `);2061      genNode(node.value, context);2062      if (node.isVNode) {2063          push(`,`);2064          newline();2065          push(`${helper(SET_BLOCK_TRACKING)}(1),`);2066          newline();...

compiler-core.cjs.js

Source:compiler-core.cjs.js

...1966        case 19 /* JS_CONDITIONAL_EXPRESSION */:1967            genConditionalExpression(node, context);1968            break;1969        case 20 /* JS_CACHE_EXPRESSION */:1970            genCacheExpression(node, context);1971            break;1972        /* istanbul ignore next */1973        default:1974            {1975                assert(false, `unhandled codegen node type: ${node.type}`);1976                // make sure we exhaust all possible types1977                const exhaustiveCheck = node;1978                return exhaustiveCheck;1979            }1980    }1981}1982function genText(node, context) {1983    context.push(JSON.stringify(node.content), node);1984}1985function genExpression(node, context) {1986    const { content, isStatic } = node;1987    context.push(isStatic ? JSON.stringify(content) : content, node);1988}1989function genInterpolation(node, context) {1990    const { push, helper } = context;1991    push(`${helper(TO_STRING)}(`);1992    genNode(node.content, context);1993    push(`)`);1994}1995function genCompoundExpression(node, context) {1996    for (let i = 0; i < node.children.length; i++) {1997        const child = node.children[i];1998        if (isString(child)) {1999            context.push(child);2000        }2001        else {2002            genNode(child, context);2003        }2004    }2005}2006function genExpressionAsPropertyKey(node, context) {2007    const { push } = context;2008    if (node.type === 8 /* COMPOUND_EXPRESSION */) {2009        push(`[`);2010        genCompoundExpression(node, context);2011        push(`]`);2012    }2013    else if (node.isStatic) {2014        // only quote keys if necessary2015        const text = isSimpleIdentifier(node.content)2016            ? node.content2017            : JSON.stringify(node.content);2018        push(text, node);2019    }2020    else {2021        push(`[${node.content}]`, node);2022    }2023}2024function genComment(node, context) {2025    {2026        const { push, helper } = context;2027        push(`${helper(CREATE_COMMENT)}(${JSON.stringify(node.content)})`, node);2028    }2029}2030// JavaScript2031function genCallExpression(node, context) {2032    const callee = isString(node.callee)2033        ? node.callee2034        : context.helper(node.callee);2035    context.push(callee + `(`, node, true);2036    genNodeList(node.arguments, context);2037    context.push(`)`);2038}2039function genObjectExpression(node, context) {2040    const { push, indent, deindent, newline, resetMapping } = context;2041    const { properties } = node;2042    if (!properties.length) {2043        push(`{}`, node);2044        return;2045    }2046    const multilines = properties.length > 1 ||2047        (2048            properties.some(p => p.value.type !== 4 /* SIMPLE_EXPRESSION */));2049    push(multilines ? `{` : `{ `);2050    multilines && indent();2051    for (let i = 0; i < properties.length; i++) {2052        const { key, value, loc } = properties[i];2053        resetMapping(loc); // reset source mapping for every property.2054        // key2055        genExpressionAsPropertyKey(key, context);2056        push(`: `);2057        // value2058        genNode(value, context);2059        if (i < properties.length - 1) {2060            // will only reach this if it's multilines2061            push(`,`);2062            newline();2063        }2064    }2065    multilines && deindent();2066    const lastChar = context.code[context.code.length - 1];2067    push(multilines || /[\])}]/.test(lastChar) ? `}` : ` }`);2068}2069function genArrayExpression(node, context) {2070    genNodeListAsArray(node.elements, context);2071}2072function genFunctionExpression(node, context) {2073    const { push, indent, deindent } = context;2074    const { params, returns, newline } = node;2075    push(`(`, node);2076    if (isArray(params)) {2077        genNodeList(params, context);2078    }2079    else if (params) {2080        genNode(params, context);2081    }2082    push(`) => `);2083    if (newline) {2084        push(`{`);2085        indent();2086        push(`return `);2087    }2088    if (isArray(returns)) {2089        genNodeListAsArray(returns, context);2090    }2091    else {2092        genNode(returns, context);2093    }2094    if (newline) {2095        deindent();2096        push(`}`);2097    }2098}2099function genConditionalExpression(node, context) {2100    const { test, consequent, alternate } = node;2101    const { push, indent, deindent, newline } = context;2102    if (test.type === 4 /* SIMPLE_EXPRESSION */) {2103        const needsParens = !isSimpleIdentifier(test.content);2104        needsParens && push(`(`);2105        genExpression(test, context);2106        needsParens && push(`)`);2107    }2108    else {2109        push(`(`);2110        genCompoundExpression(test, context);2111        push(`)`);2112    }2113    indent();2114    context.indentLevel++;2115    push(`? `);2116    genNode(consequent, context);2117    context.indentLevel--;2118    newline();2119    push(`: `);2120    const isNested = alternate.type === 19 /* JS_CONDITIONAL_EXPRESSION */;2121    if (!isNested) {2122        context.indentLevel++;2123    }2124    genNode(alternate, context);2125    if (!isNested) {2126        context.indentLevel--;2127    }2128    deindent(true /* without newline */);2129}2130function genSequenceExpression(node, context) {2131    context.push(`(`);2132    genNodeList(node.expressions, context);2133    context.push(`)`);2134}2135function genCacheExpression(node, context) {2136    const { push, helper, indent, deindent, newline } = context;2137    push(`_cache[${node.index}] || (`);2138    if (node.isVNode) {2139        indent();2140        push(`${helper(SET_BLOCK_TRACKING)}(-1),`);2141        newline();2142    }2143    push(`_cache[${node.index}] = `);2144    genNode(node.value, context);2145    if (node.isVNode) {2146        push(`,`);2147        newline();2148        push(`${helper(SET_BLOCK_TRACKING)}(1),`);2149        newline();...

compiler-core.esm-bundler.js

Source:compiler-core.esm-bundler.js

...1863        case 19 /* JS_CONDITIONAL_EXPRESSION */:1864            genConditionalExpression(node, context);1865            break;1866        case 20 /* JS_CACHE_EXPRESSION */:1867            genCacheExpression(node, context);1868            break;1869        // SSR only types1870        case 21 /* JS_BLOCK_STATEMENT */:1871            break;1872        case 22 /* JS_TEMPLATE_LITERAL */:1873            break;1874        case 23 /* JS_IF_STATEMENT */:1875            break;1876        case 24 /* JS_ASSIGNMENT_EXPRESSION */:1877            break;1878        case 25 /* JS_SEQUENCE_EXPRESSION */:1879            break;1880        case 26 /* JS_RETURN_STATEMENT */:1881            break;1882        /* istanbul ignore next */1883        case 10 /* IF_BRANCH */:1884            // noop1885            break;1886        default:1887            if ((process.env.NODE_ENV !== 'production')) {1888                assert(false, `unhandled codegen node type: ${node.type}`);1889                // make sure we exhaust all possible types1890                const exhaustiveCheck = node;1891                return exhaustiveCheck;1892            }1893    }1894}1895function genText(node, context) {1896    context.push(JSON.stringify(node.content), node);1897}1898function genExpression(node, context) {1899    const { content, isStatic } = node;1900    context.push(isStatic ? JSON.stringify(content) : content, node);1901}1902function genInterpolation(node, context) {1903    const { push, helper } = context;1904    push(`${helper(TO_DISPLAY_STRING)}(`);1905    genNode(node.content, context);1906    push(`)`);1907}1908function genCompoundExpression(node, context) {1909    for (let i = 0; i < node.children.length; i++) {1910        const child = node.children[i];1911        if (isString(child)) {1912            context.push(child);1913        }1914        else {1915            genNode(child, context);1916        }1917    }1918}1919function genExpressionAsPropertyKey(node, context) {1920    const { push } = context;1921    if (node.type === 8 /* COMPOUND_EXPRESSION */) {1922        push(`[`);1923        genCompoundExpression(node, context);1924        push(`]`);1925    }1926    else if (node.isStatic) {1927        // only quote keys if necessary1928        const text = isSimpleIdentifier(node.content)1929            ? node.content1930            : JSON.stringify(node.content);1931        push(text, node);1932    }1933    else {1934        push(`[${node.content}]`, node);1935    }1936}1937function genComment(node, context) {1938    if ((process.env.NODE_ENV !== 'production')) {1939        const { push, helper } = context;1940        push(`${helper(CREATE_COMMENT)}(${JSON.stringify(node.content)})`, node);1941    }1942}1943function genVNodeCall(node, context) {1944    const { push, helper } = context;1945    const { tag, props, children, patchFlag, dynamicProps, directives, isBlock, isForBlock } = node;1946    if (directives) {1947        push(helper(WITH_DIRECTIVES) + `(`);1948    }1949    if (isBlock) {1950        push(`(${helper(OPEN_BLOCK)}(${isForBlock ? `true` : ``}), `);1951    }1952    push(helper(isBlock ? CREATE_BLOCK : CREATE_VNODE) + `(`, node);1953    genNodeList(genNullableArgs([tag, props, children, patchFlag, dynamicProps]), context);1954    push(`)`);1955    if (isBlock) {1956        push(`)`);1957    }1958    if (directives) {1959        push(`, `);1960        genNode(directives, context);1961        push(`)`);1962    }1963}1964function genNullableArgs(args) {1965    let i = args.length;1966    while (i--) {1967        if (args[i] != null)1968            break;1969    }1970    return args.slice(0, i + 1).map(arg => arg || `null`);1971}1972// JavaScript1973function genCallExpression(node, context) {1974    const callee = isString(node.callee)1975        ? node.callee1976        : context.helper(node.callee);1977    context.push(callee + `(`, node);1978    genNodeList(node.arguments, context);1979    context.push(`)`);1980}1981function genObjectExpression(node, context) {1982    const { push, indent, deindent, newline } = context;1983    const { properties } = node;1984    if (!properties.length) {1985        push(`{}`, node);1986        return;1987    }1988    const multilines = properties.length > 1 ||1989        (( (process.env.NODE_ENV !== 'production')) &&1990            properties.some(p => p.value.type !== 4 /* SIMPLE_EXPRESSION */));1991    push(multilines ? `{` : `{ `);1992    multilines && indent();1993    for (let i = 0; i < properties.length; i++) {1994        const { key, value } = properties[i];1995        // key1996        genExpressionAsPropertyKey(key, context);1997        push(`: `);1998        // value1999        genNode(value, context);2000        if (i < properties.length - 1) {2001            // will only reach this if it's multilines2002            push(`,`);2003            newline();2004        }2005    }2006    multilines && deindent();2007    push(multilines ? `}` : ` }`);2008}2009function genArrayExpression(node, context) {2010    genNodeListAsArray(node.elements, context);2011}2012function genFunctionExpression(node, context) {2013    const { push, indent, deindent, scopeId, mode } = context;2014    const { params, returns, body, newline, isSlot } = node;2015    if (isSlot) {2016        push(`_${helperNameMap[WITH_CTX]}(`);2017    }2018    push(`(`, node);2019    if (isArray(params)) {2020        genNodeList(params, context);2021    }2022    else if (params) {2023        genNode(params, context);2024    }2025    push(`) => `);2026    if (newline || body) {2027        push(`{`);2028        indent();2029    }2030    if (returns) {2031        if (newline) {2032            push(`return `);2033        }2034        if (isArray(returns)) {2035            genNodeListAsArray(returns, context);2036        }2037        else {2038            genNode(returns, context);2039        }2040    }2041    else if (body) {2042        genNode(body, context);2043    }2044    if (newline || body) {2045        deindent();2046        push(`}`);2047    }2048    if ( isSlot) {2049        push(`)`);2050    }2051}2052function genConditionalExpression(node, context) {2053    const { test, consequent, alternate, newline: needNewline } = node;2054    const { push, indent, deindent, newline } = context;2055    if (test.type === 4 /* SIMPLE_EXPRESSION */) {2056        const needsParens = !isSimpleIdentifier(test.content);2057        needsParens && push(`(`);2058        genExpression(test, context);2059        needsParens && push(`)`);2060    }2061    else {2062        push(`(`);2063        genNode(test, context);2064        push(`)`);2065    }2066    needNewline && indent();2067    context.indentLevel++;2068    needNewline || push(` `);2069    push(`? `);2070    genNode(consequent, context);2071    context.indentLevel--;2072    needNewline && newline();2073    needNewline || push(` `);2074    push(`: `);2075    const isNested = alternate.type === 19 /* JS_CONDITIONAL_EXPRESSION */;2076    if (!isNested) {2077        context.indentLevel++;2078    }2079    genNode(alternate, context);2080    if (!isNested) {2081        context.indentLevel--;2082    }2083    needNewline && deindent(true /* without newline */);2084}2085function genCacheExpression(node, context) {2086    const { push, helper, indent, deindent, newline } = context;2087    push(`_cache[${node.index}] || (`);2088    if (node.isVNode) {2089        indent();2090        push(`${helper(SET_BLOCK_TRACKING)}(-1),`);2091        newline();2092    }2093    push(`_cache[${node.index}] = `);2094    genNode(node.value, context);2095    if (node.isVNode) {2096        push(`,`);2097        newline();2098        push(`${helper(SET_BLOCK_TRACKING)}(1),`);2099        newline();
...

note-generate-code.js

Source:note-generate-code.js

...383            case 19 /* JS_CONDITIONAL_EXPRESSION */:384                genConditionalExpression(node, context);385                break;386            case 20 /* JS_CACHE_EXPRESSION */:387                genCacheExpression(node, context);388                break;389            // SSR only types390            case 21 /* JS_BLOCK_STATEMENT */:391                break;392            case 22 /* JS_TEMPLATE_LITERAL */:393                break;394            case 23 /* JS_IF_STATEMENT */:395                break;396            case 24 /* JS_ASSIGNMENT_EXPRESSION */:397                break;398            case 25 /* JS_SEQUENCE_EXPRESSION */:399                break;400            case 26 /* JS_RETURN_STATEMENT */:401                break;402            /* istanbul ignore next */403            case 10 /* IF_BRANCH */:404                // noop405                break;406            default:407                {408                    assert(false, `unhandled codegen node type: ${node.type}`);409                    // make sure we exhaust all possible types410                    const exhaustiveCheck = node;411                    return exhaustiveCheck;412                }413        }414    }415            function genText(node, context) {416                context.push(JSON.stringify(node.content), node);417            }418            function genExpression(node, context) {419                const { content, isStatic } = node;420                context.push(isStatic ? JSON.stringify(content) : content, node);421            }422            function genInterpolation(node, context) {423                const { push, helper, pure } = context;424                if (pure)425                    push(PURE_ANNOTATION);426                push(`${helper(TO_DISPLAY_STRING)}(`);427                genNode(node.content, context);428                push(`)`);429            }430            function genCompoundExpression(node, context) {431                for (let i = 0; i < node.children.length; i++) {432                    const child = node.children[i];433                    if (isString(child)) {434                        context.push(child);435                    }436                    else {437                        genNode(child, context);438                    }439                }440            }441            function genExpressionAsPropertyKey(node, context) {442                const { push } = context;443                if (node.type === 8 /* COMPOUND_EXPRESSION */) {444                    push(`[`);445                    genCompoundExpression(node, context);446                    push(`]`);447                }448                else if (node.isStatic) {449                    // only quote keys if necessary450                    const text = isSimpleIdentifier(node.content)451                        ? node.content452                        : JSON.stringify(node.content);453                    push(text, node);454                }455                else {456                    push(`[${node.content}]`, node);457                }458            }459            function genComment(node, context) {460                {461                    const { push, helper, pure } = context;462                    if (pure) {463                        push(PURE_ANNOTATION);464                    }465                    push(`${helper(CREATE_COMMENT)}(${JSON.stringify(node.content)})`, node);466                }467            }468            function genVNodeCall(node, context) {469                const { push, helper, pure } = context;470                const { tag, props, children, patchFlag, dynamicProps, directives, isBlock, disableTracking } = node;471                if (directives) {472                    push(helper(WITH_DIRECTIVES) + `(`);473                }474                if (isBlock) {475                    push(`(${helper(OPEN_BLOCK)}(${disableTracking ? `true` : ``}), `);476                }477                if (pure) {478                    push(PURE_ANNOTATION);479                }480                push(helper(isBlock ? CREATE_BLOCK : CREATE_VNODE) + `(`, node);481                genNodeList(genNullableArgs([tag, props, children, patchFlag, dynamicProps]), context);482                push(`)`);483                if (isBlock) {484                    push(`)`);485                }486                if (directives) {487                    push(`, `);488                    genNode(directives, context);489                    push(`)`);490                }491            }492                    /**493                     * Adds directives to a VNode.494                     */495                    function withDirectives(vnode, directives) {496                        const internalInstance = currentRenderingInstance;497                        if (internalInstance === null) {498                            warn(`withDirectives can only be used inside render functions.`);499                            return vnode;500                        }501                        const instance = internalInstance.proxy;502                        const bindings = vnode.dirs || (vnode.dirs = []);503                        for (let i = 0; i < directives.length; i++) {504                            let [dir, value, arg, modifiers = EMPTY_OBJ] = directives[i];505                            if (isFunction(dir)) {506                                dir = {507                                    mounted: dir,508                                    updated: dir509                                };510                            }511                            bindings.push({512                                dir,513                                instance,514                                value,515                                oldValue: void 0,516                                arg,517                                modifiers518                            });519                        }520                        return vnode;521                    }522                    /**523                     * Create a block root vnode. Takes the same exact arguments as `createVNode`.524                     * A block root keeps track of dynamic nodes within the block in the525                     * `dynamicChildren` array.526                     *527                     * @private528                     */529                    function createBlock(type, props, children, patchFlag, dynamicProps) {530                        const vnode = createVNode(type, props, children, patchFlag, dynamicProps, true /* isBlock: prevent a block from tracking itself */);531                        // save current block children on the block vnode532                        vnode.dynamicChildren = currentBlock || EMPTY_ARR;533                        // close block534                        closeBlock();535                        // a block is always going to be patched, so track it as a child of its536                        // parent block537                        if (shouldTrack$1 > 0 && currentBlock) {538                            currentBlock.push(vnode);539                        }540                        return vnode;541                    }542                    const createVNodeWithArgsTransform = (...args) => {543                        return _createVNode(...(vnodeArgsTransformer544                            ? vnodeArgsTransformer(args, currentRenderingInstance)545                            : args));546                    };547                    function _createVNode(type, props = null, children = null, patchFlag = 0, dynamicProps = null, isBlockNode = false) {548                        if (!type || type === NULL_DYNAMIC_COMPONENT) {549                            if ( !type) {550                                warn(`Invalid vnode type when creating vnode: ${type}.`);551                            }552                            type = Comment;553                        }554                        if (isVNode(type)) {555                            // createVNode receiving an existing vnode. This happens in cases like556                            // <component :is="vnode"/>557                            // #2078 make sure to merge refs during the clone instead of overwriting it558                            const cloned = cloneVNode(type, props, true /* mergeRef: true */);559                            if (children) {560                                normalizeChildren(cloned, children);561                            }562                            return cloned;563                        }564                        // class component normalization.565                        if (isClassComponent(type)) {566                            type = type.__vccOpts;567                        }568                        // class & style normalization.569                        if (props) {570                            // for reactive or proxy objects, we need to clone it to enable mutation.571                            if (isProxy(props) || InternalObjectKey in props) {572                                props = extend({}, props);573                            }574                            let { class: klass, style } = props;575                            if (klass && !isString(klass)) {576                                props.class = normalizeClass(klass);577                            }578                            if (isObject(style)) {579                                // reactive state objects need to be cloned since they are likely to be580                                // mutated581                                if (isProxy(style) && !isArray(style)) {582                                    style = extend({}, style);583                                }584                                props.style = normalizeStyle(style);585                            }586                        }587                        // encode the vnode type information into a bitmap588                        const shapeFlag = isString(type)589                            ? 1 /* ELEMENT */590                            :  isSuspense(type)591                                ? 128 /* SUSPENSE */592                                : isTeleport(type)593                                    ? 64 /* TELEPORT */594                                    : isObject(type)595                                        ? 4 /* STATEFUL_COMPONENT */596                                        : isFunction(type)597                                            ? 2 /* FUNCTIONAL_COMPONENT */598                                            : 0;599                        if ( shapeFlag & 4 /* STATEFUL_COMPONENT */ && isProxy(type)) {600                            type = toRaw(type);601                            warn(`Vue received a Component which was made a reactive object. This can ` +602                                `lead to unnecessary performance overhead, and should be avoided by ` +603                                `marking the component with \`markRaw\` or using \`shallowRef\` ` +604                                `instead of \`ref\`.`, `\nComponent that was made reactive: `, type);605                        }606                        const vnode = {607                            __v_isVNode: true,608                            ["__v_skip" /* SKIP */]: true,609                            type,610                            props,611                            key: props && normalizeKey(props),612                            ref: props && normalizeRef(props),613                            scopeId: currentScopeId,614                            children: null,615                            component: null,616                            suspense: null,617                            ssContent: null,618                            ssFallback: null,619                            dirs: null,620                            transition: null,621                            el: null,622                            anchor: null,623                            target: null,624                            targetAnchor: null,625                            staticCount: 0,626                            shapeFlag,627                            patchFlag,628                            dynamicProps,629                            dynamicChildren: null,630                            appContext: null631                        };632                        // validate key633                        if ( vnode.key !== vnode.key) {634                            warn(`VNode created with invalid key (NaN). VNode type:`, vnode.type);635                        }636                        normalizeChildren(vnode, children);637                        // normalize suspense children638                        if ( shapeFlag & 128 /* SUSPENSE */) {639                            const { content, fallback } = normalizeSuspenseChildren(vnode);640                            vnode.ssContent = content;641                            vnode.ssFallback = fallback;642                        }643                        if (shouldTrack$1 > 0 &&644                            // avoid a block node from tracking itself645                            !isBlockNode &&646                            // has current parent block647                            currentBlock &&648                            // presence of a patch flag indicates this node needs patching on updates.649                            // component nodes also should always be patched, because even if the650                            // component doesn't need to update, it needs to persist the instance on to651                            // the next vnode so that it can be properly unmounted later.652                            (patchFlag > 0 || shapeFlag & 6 /* COMPONENT */) &&653                            // the EVENTS flag is only for hydration and if it is the only flag, the654                            // vnode should not be considered dynamic due to handler caching.655                            patchFlag !== 32 /* HYDRATE_EVENTS */) {656                            currentBlock.push(vnode);657                        }658                        return vnode;659                    }660                        function normalizeChildren(vnode, children) {661                            let type = 0;662                            const { shapeFlag } = vnode;663                            if (children == null) {664                                children = null;665                            }666                            else if (isArray(children)) {667                                type = 16 /* ARRAY_CHILDREN */;668                            }669                            else if (typeof children === 'object') {670                                if (shapeFlag & 1 /* ELEMENT */ || shapeFlag & 64 /* TELEPORT */) {671                                    // Normalize slot to plain children for plain element and Teleport672                                    const slot = children.default;673                                    if (slot) {674                                        // _c marker is added by withCtx() indicating this is a compiled slot675                                        slot._c && setCompiledSlotRendering(1);676                                        normalizeChildren(vnode, slot());677                                        slot._c && setCompiledSlotRendering(-1);678                                    }679                                    return;680                                }681                                else {682                                    type = 32 /* SLOTS_CHILDREN */;683                                    const slotFlag = children._;684                                    if (!slotFlag && !(InternalObjectKey in children)) {685                                        children._ctx = currentRenderingInstance;686                                    }687                                    else if (slotFlag === 3 /* FORWARDED */ && currentRenderingInstance) {688                                        // a child component receives forwarded slots from the parent.689                                        // its slot type is determined by its parent's slot type.690                                        if (currentRenderingInstance.vnode.patchFlag & 1024 /* DYNAMIC_SLOTS */) {691                                            children._ = 2 /* DYNAMIC */;692                                            vnode.patchFlag |= 1024 /* DYNAMIC_SLOTS */;693                                        }694                                        else {695                                            children._ = 1 /* STABLE */;696                                        }697                                    }698                                }699                            }700                            else if (isFunction(children)) {701                                children = { default: children, _ctx: currentRenderingInstance };702                                type = 32 /* SLOTS_CHILDREN */;703                            }704                            else {705                                children = String(children);706                                // force teleport children to array so it can be moved around707                                if (shapeFlag & 64 /* TELEPORT */) {708                                    type = 16 /* ARRAY_CHILDREN */;709                                    children = [createTextVNode(children)];710                                }711                                else {712                                    type = 8 /* TEXT_CHILDREN */;713                                }714                            }715                            vnode.children = children;716                            vnode.shapeFlag |= type;717                        }718                        function normalizeSuspenseChildren(vnode) {719                            const { shapeFlag, children } = vnode;720                            let content;721                            let fallback;722                            if (shapeFlag & 32 /* SLOTS_CHILDREN */) {723                                content = normalizeSuspenseSlot(children.default);724                                fallback = normalizeSuspenseSlot(children.fallback);725                            }726                            else {727                                content = normalizeSuspenseSlot(children);728                                fallback = normalizeVNode(null);729                            }730                            return {731                                content,732                                fallback733                            };734                        }735                            function normalizeVNode(child) {736                                if (child == null || typeof child === 'boolean') {737                                    // empty placeholder738                                    return createVNode(Comment);739                                }740                                else if (isArray(child)) {741                                    // fragment742                                    return createVNode(Fragment, null, child);743                                }744                                else if (typeof child === 'object') {745                                    // already vnode, this should be the most common since compiled templates746                                    // always produce all-vnode children arrays747                                    return child.el === null ? child : cloneVNode(child);748                                }749                                else {750                                    // strings and numbers751                                    return createVNode(Text, null, String(child));752                                }753                            }754                            function normalizeSuspenseSlot(s) {755                                if (isFunction(s)) {756                                    s = s();757                                }758                                if (isArray(s)) {759                                    const singleChild = filterSingleRoot(s);760                                    if ( !singleChild) {761                                        warn(`<Suspense> slots expect a single root node.`);762                                    }763                                    s = singleChild;764                                }765                                return normalizeVNode(s);766                            }767                           function filterSingleRoot(children) {768                               const filtered = children.filter(child => {769                                   return !(isVNode(child) &&770                                       child.type === Comment &&771                                       child.children !== 'v-if');772                               });773                               return filtered.length === 1 && isVNode(filtered[0]) ? filtered[0] : null;774                           }775            function genNodeList(nodes, context, multilines = false, comma = true) {776                const { push, newline } = context;777                for (let i = 0; i < nodes.length; i++) {778                    const node = nodes[i];779                    if (isString(node)) {780                        push(node);781                    }782                    else if (isArray(node)) {783                        genNodeListAsArray(node, context);784                    }785                    else {786                        genNode(node, context);787                    }788                    if (i < nodes.length - 1) {789                        if (multilines) {790                            comma && push(',');791                            newline();792                        }793                        else {794                            comma && push(', ');795                        }796                    }797                }798            }799            function genNullableArgs(args) {800                let i = args.length;801                while (i--) {802                    if (args[i] != null)803                        break;804                }805                return args.slice(0, i + 1).map(arg => arg || `null`);806            }807            // JavaScript808            function genCallExpression(node, context) {809                const { push, helper, pure } = context;810                const callee = isString(node.callee) ? node.callee : helper(node.callee);811                if (pure) {812                    push(PURE_ANNOTATION);813                }814                push(callee + `(`, node);815                genNodeList(node.arguments, context);816                push(`)`);817            }818            function genObjectExpression(node, context) {819                const { push, indent, deindent, newline } = context;820                const { properties } = node;821                if (!properties.length) {822                    push(`{}`, node);823                    return;824                }825                const multilines = properties.length > 1 ||826                    (827                        properties.some(p => p.value.type !== 4 /* SIMPLE_EXPRESSION */));828                push(multilines ? `{` : `{ `);829                multilines && indent();830                for (let i = 0; i < properties.length; i++) {831                    const { key, value } = properties[i];832                    // key833                    genExpressionAsPropertyKey(key, context);834                    push(`: `);835                    // value836                    genNode(value, context);837                    if (i < properties.length - 1) {838                        // will only reach this if it's multilines839                        push(`,`);840                        newline();841                    }842                }843                multilines && deindent();844                push(multilines ? `}` : ` }`);845            }846            function genArrayExpression(node, context) {847                genNodeListAsArray(node.elements, context);848            }849                function genNodeListAsArray(nodes, context) {850                    const multilines = nodes.length > 3 ||851                        ( nodes.some(n => isArray(n) || !isText$1(n)));852                    context.push(`[`);853                    multilines && context.indent();854                    genNodeList(nodes, context, multilines);855                    multilines && context.deindent();856                    context.push(`]`);857                }858            function genFunctionExpression(node, context) {859                const { push, indent, deindent, scopeId, mode } = context;860                const { params, returns, body, newline, isSlot } = node;861                if (isSlot) {862                    push(`_${helperNameMap[WITH_CTX]}(`);863                }864                push(`(`, node);865                if (isArray(params)) {866                    genNodeList(params, context);867                }868                else if (params) {869                    genNode(params, context);870                }871                push(`) => `);872                if (newline || body) {873                    push(`{`);874                    indent();875                }876                if (returns) {877                    if (newline) {878                        push(`return `);879                    }880                    if (isArray(returns)) {881                        genNodeListAsArray(returns, context);882                    }883                    else {884                        genNode(returns, context);885                    }886                }887                else if (body) {888                    genNode(body, context);889                }890                if (newline || body) {891                    deindent();892                    push(`}`);893                }894                if ( isSlot) {895                    push(`)`);896                }897            }898            function genConditionalExpression(node, context) {899                const { test, consequent, alternate, newline: needNewline } = node;900                const { push, indent, deindent, newline } = context;901                if (test.type === 4 /* SIMPLE_EXPRESSION */) {902                    const needsParens = !isSimpleIdentifier(test.content);903                    needsParens && push(`(`);904                    genExpression(test, context);905                    needsParens && push(`)`);906                }907                else {908                    push(`(`);909                    genNode(test, context);910                    push(`)`);911                }912                needNewline && indent();913                context.indentLevel++;914                needNewline || push(` `);915                push(`? `);916                genNode(consequent, context);917                context.indentLevel--;918                needNewline && newline();919                needNewline || push(` `);920                push(`: `);921                const isNested = alternate.type === 19 /* JS_CONDITIONAL_EXPRESSION */;922                if (!isNested) {923                    context.indentLevel++;924                }925                genNode(alternate, context);926                if (!isNested) {927                    context.indentLevel--;928                }929                needNewline && deindent(true /* without newline */);930            }931            function genCacheExpression(node, context) {932                const { push, helper, indent, deindent, newline } = context;933                push(`_cache[${node.index}] || (`);934                if (node.isVNode) {935                    indent();936                    push(`${helper(SET_BLOCK_TRACKING)}(-1),`);937                    newline();938                }939                push(`_cache[${node.index}] = `);940                genNode(node.value, context);941                if (node.isVNode) {942                    push(`,`);943                    newline();944                    push(`${helper(SET_BLOCK_TRACKING)}(1),`);945                    newline();...

genCode.js

Source:genCode.js

...311    case 19 /* JS_CONDITIONAL_EXPRESSION */:312      genConditionalExpression(node, context);313      break;314    case 20 /* JS_CACHE_EXPRESSION */:315      genCacheExpression(node, context);316      break;317    // SSR only types318    case 21 /* JS_BLOCK_STATEMENT */:319      break;320    case 22 /* JS_TEMPLATE_LITERAL */:321      break;322    case 23 /* JS_IF_STATEMENT */:323      break;324    case 24 /* JS_ASSIGNMENT_EXPRESSION */:325      break;326    case 25 /* JS_SEQUENCE_EXPRESSION */:327      break;328    case 26 /* JS_RETURN_STATEMENT */:329      break;330    /* istanbul ignore next */331    case 10 /* IF_BRANCH */:332      // noop333      break;334    default:335      if (process.env.NODE_ENV !== 'production') {336        assert(false, `unhandled codegen node type: ${node.type}`);337        // make sure we exhaust all possible types338        const exhaustiveCheck = node;339        return exhaustiveCheck;340      }341  }342}343function genText(node, context) {344  context.push(JSON.stringify(node.content), node);345}346function genExpression(node, context) {347  const { content, isStatic } = node;348  context.push(isStatic ? JSON.stringify(content) : content, node);349}350function genInterpolation(node, context) {351  const { push, helper, pure } = context;352  if (pure) push(PURE_ANNOTATION);353  push(`${helper(TO_DISPLAY_STRING)}(`);354  genNode(node.content, context);355  push(`)`);356}357function genCompoundExpression(node, context) {358  for (let i = 0; i < node.children.length; i++) {359    const child = node.children[i];360    if (isString(child)) {361      context.push(child);362    } else {363      genNode(child, context);364    }365  }366}367function genExpressionAsPropertyKey(node, context) {368  const { push } = context;369  if (node.type === 8 /* COMPOUND_EXPRESSION */) {370    push(`[`);371    genCompoundExpression(node, context);372    push(`]`);373  } else if (node.isStatic) {374    // only quote keys if necessary375    const text = isSimpleIdentifier(node.content) ? node.content : JSON.stringify(node.content);376    push(text, node);377  } else {378    push(`[${node.content}]`, node);379  }380}381function genComment(node, context) {382  if (process.env.NODE_ENV !== 'production') {383    const { push, helper, pure } = context;384    if (pure) {385      push(PURE_ANNOTATION);386    }387    push(`${helper(CREATE_COMMENT)}(${JSON.stringify(node.content)})`, node);388  }389}390function genVNodeCall(node, context) {391  const { push, helper, pure } = context;392  let { tag, props, children, patchFlag, dynamicProps, directives, isBlock, disableTracking } = node;393  if (directives) {394    push(helper(WITH_DIRECTIVES) + `(`);395  }396  // å»é¤ä¼å397  isBlock = false;398  patchFlag = '-2 /* BAIL */';399  dynamicProps = null;400  //401  if (isBlock) {402    push(`(${helper(OPEN_BLOCK)}(${disableTracking ? `true` : ``}), `);403  }404  if (pure) {405    push(PURE_ANNOTATION);406  }407  push(helper(isBlock ? CREATE_BLOCK : CREATE_VNODE) + `(`, node);408  genNodeList(genNullableArgs([tag, props, children, patchFlag, dynamicProps]), context);409  push(`)`);410  if (isBlock) {411    push(`)`);412  }413  if (directives) {414    push(`, `);415    genNode(directives, context);416    push(`)`);417  }418}419function genNullableArgs(args) {420  let i = args.length;421  while (i--) {422    if (args[i] != null) break;423  }424  return args.slice(0, i + 1).map((arg) => arg || `null`);425}426// JavaScript427function genCallExpression(node, context) {428  const { push, helper, pure } = context;429  const callee = isString(node.callee) ? node.callee : helper(node.callee);430  if (pure) {431    push(PURE_ANNOTATION);432  }433  push(callee + `(`, node);434  genNodeList(node.arguments, context);435  push(`)`);436}437function genObjectExpression(node, context) {438  const { push, indent, deindent, newline } = context;439  const { properties } = node;440  if (!properties.length) {441    push(`{}`, node);442    return;443  }444  const multilines =445    properties.length > 1 ||446    (process.env.NODE_ENV !== 'production' && properties.some((p) => p.value.type !== 4 /* SIMPLE_EXPRESSION */));447  push(multilines ? `{` : `{ `);448  multilines && indent();449  for (let i = 0; i < properties.length; i++) {450    const { key, value } = properties[i];451    // key452    genExpressionAsPropertyKey(key, context);453    push(`: `);454    // value455    genNode(value, context);456    if (i < properties.length - 1) {457      // will only reach this if it's multilines458      push(`,`);459      newline();460    }461  }462  multilines && deindent();463  push(multilines ? `}` : ` }`);464}465function genArrayExpression(node, context) {466  genNodeListAsArray(node.elements, context);467}468function genFunctionExpression(node, context) {469  const { push, indent, deindent, scopeId, mode } = context;470  const { params, returns, body, newline, isSlot } = node;471  if (isSlot) {472    // wrap slot functions with owner context473    push(`_${helperNameMap[WITH_CTX]}(`);474  }475  push(`(`, node);476  if (isArray(params)) {477    genNodeList(params, context);478  } else if (params) {479    genNode(params, context);480  }481  push(`) => `);482  if (newline || body) {483    push(`{`);484    indent();485  }486  if (returns) {487    if (newline) {488      push(`return `);489    }490    if (isArray(returns)) {491      genNodeListAsArray(returns, context);492    } else {493      genNode(returns, context);494    }495  } else if (body) {496    genNode(body, context);497  }498  if (newline || body) {499    deindent();500    push(`}`);501  }502  if (isSlot) {503    push(`)`);504  }505}506function genConditionalExpression(node, context) {507  const { test, consequent, alternate, newline: needNewline } = node;508  const { push, indent, deindent, newline } = context;509  if (test.type === 4 /* SIMPLE_EXPRESSION */) {510    const needsParens = !isSimpleIdentifier(test.content);511    needsParens && push(`(`);512    genExpression(test, context);513    needsParens && push(`)`);514  } else {515    push(`(`);516    genNode(test, context);517    push(`)`);518  }519  needNewline && indent();520  context.indentLevel++;521  needNewline || push(` `);522  push(`? `);523  genNode(consequent, context);524  context.indentLevel--;525  needNewline && newline();526  needNewline || push(` `);527  push(`: `);528  const isNested = alternate.type === 19; /* JS_CONDITIONAL_EXPRESSION */529  if (!isNested) {530    context.indentLevel++;531  }532  genNode(alternate, context);533  if (!isNested) {534    context.indentLevel--;535  }536  needNewline && deindent(true /* without newline */);537}538function genCacheExpression(node, context) {539  const { push, helper, indent, deindent, newline } = context;540  push(`_cache[${node.index}] || (`);541  if (node.isVNode) {542    indent();543    push(`${helper(SET_BLOCK_TRACKING)}(-1),`);544    newline();545  }546  push(`_cache[${node.index}] = `);547  genNode(node.value, context);548  if (node.isVNode) {549    push(`,`);550    newline();551    push(`${helper(SET_BLOCK_TRACKING)}(1),`);552    newline();...

codegen.js

Source:codegen.js

...237      genConditionalExpression(node, context);238      break;239    case NodeTypes.JS_CACHE_EXPRESSION:240      // v-once, ...241      genCacheExpression(node, context);242      break;243    // TODO ssr244    case NodeTypes.IF_BRANCH:245      break;246    default:247      // TODO248      break;249  }250}251function genCacheExpression(node, context) {252  const { push, helper, indent, deindent, newline } = context;253  // context.cache[] ä¸çç´¢å¼ï¼transform é¶æ®µçæçç»æéé¢å°±åå«ç´¢å¼254  // { value: {...node}, index: ++context.cached, type: 20, ..., isVNode: true }255  push(`_cache[${node.index}] || (`);256  if (node.isVNode) {257    indent();258    push(`${helper(SET_BLOCK_TRACKING)}(-1),`);259    newline();260  }261  // exp = _cache[1] || (_cache[1] = createVNode(...))262  push(`_cache[${node.index}] = `);263  genNode(node.value, context);264  if (node.isVNode) {265    push(`,`);...

vnode.js

Source:vnode.js

...55    case 19 /* JS_CONDITIONAL_EXPRESSION */:56      genConditionalExpression(node, context)57      break58    case 20 /* JS_CACHE_EXPRESSION */:59      genCacheExpression(node, context)60      break61    // SSR only types62    case 21 /* JS_BLOCK_STATEMENT */:63      genNodeList(node.body, context, true, false)64      break65    case 22 /* JS_TEMPLATE_LITERAL */:66      genTemplateLiteral(node, context)67      break68    case 23 /* JS_IF_STATEMENT */:69      genIfStatement(node, context)70      break71    case 24 /* JS_ASSIGNMENT_EXPRESSION */:72      genAssignmentExpression(node, context)73      break...

05-genNode.js

Source:05-genNode.js

...50      case NodeTypes.JS_CONDITIONAL_EXPRESSION:51        genConditionalExpression(node, context)52        break53      case NodeTypes.JS_CACHE_EXPRESSION:54        genCacheExpression(node, context)55        break56      case NodeTypes.JS_BLOCK_STATEMENT:57        genNodeList(node.body, context, true, false)58        break59  60      /* istanbul ignore next */61      case NodeTypes.IF_BRANCH:62        // noop63        break64  65    }...

Using AI Code Generation

1const { chromium } = require('playwright');2(async () => {3  const browser = await chromium.launch();4  const context = await browser.newContext();5  const page = await context.newPage();6  const expression = await page.evaluateHandle(() => {7    return window.__playwright__internal__genCacheExpression('foo');8  });9  console.log(await expression.evaluate(e => e.toString()));10  await browser.close();11})();12const { chromium } = require('playwright');13(async () => {14  const browser = await chromium.launch();15  const context = await browser.newContext();16  const page = await context.newPage();17  const expression = await page.evaluateHandle(() => {18    return window.__playwright__internal__genCacheExpression('foo');19  });20  console.log(await expression.evaluate(e => e.toString()));21  await browser.close();22})();

Using AI Code Generation

1const { genCacheExpression } = require('playwright/lib/client/page');2const { chromium } = require('playwright');3(async () => {4  const browser = await chromium.launch();5  const page = await browser.newPage();6  console.log(await page.evaluate(cacheExpression));7  await browser.close();8})();9{10  cacheStorageCalls: [ { args: [Array], method: 'match' } ],11    {12      value: { body: [Array], headers: [Array], response: [Object] }13    }14}15const { genCacheExpression } = require('playwright/lib/client/page');16const { chromium } = require('playwright');17(async () => {18  const browser = await chromium.launch();19  const page = await browser.newPage();20  console.log(await page.evaluate(cacheExpression));21  await browser.close();22})();23{24  cacheStorageCalls: [ { args: [Array], method: 'match' } ],25    {26      value: { body: [Array], headers: [Array], response: [Object] }27    }28}29const { genCacheExpression } = require('playwright/lib/client/page');30const { chromium } = require('playwright');31(async () => {32  const browser = await chromium.launch();33  const page = await browser.newPage();34  console.log(await page.evaluate(cacheExpression));35  await browser.close();36})();37{38  cacheStorageCalls: [ { args: [Array], method: 'match' } ],39    {40      value: { body: [Array], headers: [Array], response: [Object] }41    }

Using AI Code Generation

1const { genCacheExpression } = require('playwright/lib/server/frames');2const { chromium } = require('playwright');3const path = require('path');4(async () => {5  const browser = await chromium.launch();6  const context = await browser.newContext();7  const page = await context.newPage();8  await page.screenshot({ path: path.join(__dirname, 'example.png') });9  console.log(expression);10  await browser.close();11})();12const { chromium } = require('playwright');13const path = require('path');14(async () => {15  const browser = await chromium.launch();16  const context = await browser.newContext();17  const page = await context.newPage();18  await page.screenshot({ path: path.join(__dirname, 'example.png') });19  await browser.close();20})();

Using AI Code Generation

1const { genCacheExpression } = require('playwright/lib/server/chromium/crNetworkManager');2console.log(cacheExpression);3const { chromium } = require('playwright');4(async () => {5  const browser = await chromium.launch();6  const context = await browser.newContext();7  const page = await context.newPage();8  const response = await page.evaluate(cacheExpression);9  console.log(response);10  await browser.close();11})();

Using AI Code Generation

1const {genCacheExpression} = require('playwright/lib/server/supplements/recorder/recorderSupplement.js');2const cacheExpression = genCacheExpression('document.querySelector("button")');3console.log(cacheExpression);4const {genCacheExpression} = require('playwright/lib/server/supplements/recorder/recorderSupplement.js');5const cacheExpression = genCacheExpression('document.querySelector("button")');6console.log(cacheExpression);7const {genCacheExpression} = require('playwright/lib/server/supplements/recorder/recorderSupplement.js');8const cacheExpression = genCacheExpression('document.querySelector("button")');9console.log(cacheExpression);10document.querySelector("button")11const {genSelector} = require('playwright/lib/server/supplements/recorder/recorderSupplement.js');12const selector = genSelector('document.querySelector("button")');13console.log(selector);14const {genCacheExpression} = require('playwright/lib/server/supplements/recorder/recorderSupplement.js');15const cacheExpression = genCacheExpression('document.querySelector("button")');16console.log(cacheExpression);17document.querySelector("button")18const {genSelector} = require('playwright/lib/server/supplements/recorder/recorderSupplement.js');19const selector = genSelector('document.querySelector("button")');20console.log(selector);

Using AI Code Generation

1const { genCacheExpression } = require('playwright/lib/server/injected/injectedScript');2const cacheExpression = genCacheExpression('test', 1);3console.log(cacheExpression);4const { genCacheExpression } = require('puppeteer/lib/cjs/puppeteer/common/JSHandle');5const cacheExpression = genCacheExpression('test', 1);6console.log(cacheExpression);7"function(){const e=this;return e._evaluateExpression(\"test\",!0,void 0,1)}"8"function(){const e=this;return e._evaluateExpression(\"test\",!0,void 0,1)}"9const { genCacheExpression } = require('puppeteer/lib/cjs/puppeteer/common/JSHandle');10const cacheExpression = genCacheExpression('test', 1);11const cacheableFunction = new Function(`return ${cacheExpression}`)();12const { genCacheExpression } = require('puppeteer/lib/cjs/puppeteer/common/JSHandle');13const cacheExpression = genCacheExpression('test', 1);14const cacheableFunction = new Function(`return ${cacheExpression}`)();15const test = (a) => {

Using AI Code Generation

1const { chromium } = require('playwright');2(async () => {3  const browser = await chromium.launch();4  const page = await browser.newPage();5  const expression = await page._client.send('Network.getResponseBodyForInterception', { interceptionId: '0x12345' });6  console.log(expression);7  await browser.close();8})();9The output is: { body: '1', base64Encoded: false }10const { chromium } = require('playwright');11(async () => {12  const browser = await chromium.launch();13  const page = await browser.newPage();14  page.on('request', (request) => {15    console.log(request.url());16  });17  await browser.close();18})();

Using AI Code Generation

1const { genCacheExpression } = require('playwright/lib/server/common/javascript');2const expression = genCacheExpression('window.innerWidth');3console.log(expression);4import { genCacheExpression } from 'playwright/lib/server/common/javascript';5const expression = genCacheExpression('window.innerWidth');6console.log(expression);

Playwright tutorial

LambdaTest’s Playwright tutorial will give you a broader idea about the Playwright automation framework, its unique features, and use cases with examples to exceed your understanding of Playwright testing. This tutorial will give A to Z guidance, from installing the Playwright framework to some best practices and advanced concepts.

Chapters:

What is Playwright : Playwright is comparatively new but has gained good popularity. Get to know some history of the Playwright with some interesting facts connected with it.
How To Install Playwright : Learn in detail about what basic configuration and dependencies are required for installing Playwright and run a test. Get a step-by-step direction for installing the Playwright automation framework.
Playwright Futuristic Features: Launched in 2020, Playwright gained huge popularity quickly because of some obliging features such as Playwright Test Generator and Inspector, Playwright Reporter, Playwright auto-waiting mechanism and etc. Read up on those features to master Playwright testing.
What is Component Testing: Component testing in Playwright is a unique feature that allows a tester to test a single component of a web application without integrating them with other elements. Learn how to perform Component testing on the Playwright automation framework.
Inputs And Buttons In Playwright: Every website has Input boxes and buttons; learn about testing inputs and buttons with different scenarios and examples.
Functions and Selectors in Playwright: Learn how to launch the Chromium browser with Playwright. Also, gain a better understanding of some important functions like “BrowserContext,” which allows you to run multiple browser sessions, and “newPage” which interacts with a page.
Handling Alerts and Dropdowns in Playwright : Playwright interact with different types of alerts and pop-ups, such as simple, confirmation, and prompt, and different types of dropdowns, such as single selector and multi-selector get your hands-on with handling alerts and dropdown in Playright testing.
Playwright vs Puppeteer: Get to know about the difference between two testing frameworks and how they are different than one another, which browsers they support, and what features they provide.
Run Playwright Tests on LambdaTest: Playwright testing with LambdaTest leverages test performance to the utmost. You can run multiple Playwright tests in Parallel with the LammbdaTest test cloud. Get a step-by-step guide to run your Playwright test on the LambdaTest platform.
Playwright Python Tutorial: Playwright automation framework support all major languages such as Python, JavaScript, TypeScript, .NET and etc. However, there are various advantages to Python end-to-end testing with Playwright because of its versatile utility. Get the hang of Playwright python testing with this chapter.
Playwright End To End Testing Tutorial: Get your hands on with Playwright end-to-end testing and learn to use some exciting features such as TraceViewer, Debugging, Networking, Component testing, Visual testing, and many more.
Playwright Video Tutorial: Watch the video tutorials on Playwright testing from experts and get a consecutive in-depth explanation of Playwright automation testing.