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How to use extractSiblingsIntoFragment method in Puppeteer

Best JavaScript code snippet using puppeteer

MDBuilder.js

Source:MDBuilder.js

...36      const classes = [];37      const errors = [];38      const headers = document.body.querySelectorAll('h3');39      for (let i = 0; i < headers.length; i++) {40        const fragment = extractSiblingsIntoFragment(41          headers[i],42          headers[i + 1]43        );44        classes.push(parseClass(fragment));45      }46      return { classes, errors };47      /**48       * @param {HTMLLIElement} element49       */50      function parseProperty(element) {51        const clone = element.cloneNode(true);52        const ul = clone.querySelector(':scope > ul');53        const str = parseComment(54          extractSiblingsIntoFragment(clone.firstChild, ul)55        );56        const name = str57          .substring(0, str.indexOf('<'))58          .replace(/\`/g, '')59          .trim();60        const type = findType(str);61        const properties = [];62        const comment = str63          .substring(str.indexOf('<') + type.length + 2)64          .trim();65        // Strings have enum values instead of properties66        if (!type.includes('string')) {67          for (const childElement of element.querySelectorAll(68            ':scope > ul > li'69          )) {70            const property = parseProperty(childElement);71            property.required = property.comment.includes('***required***');72            properties.push(property);73          }74        }75        return {76          name,77          type,78          comment,79          properties,80        };81      }82      /**83       * @param {string} str84       * @returns {string}85       */86      function findType(str) {87        const start = str.indexOf('<') + 1;88        let count = 1;89        for (let i = start; i < str.length; i++) {90          if (str[i] === '<') count++;91          if (str[i] === '>') count--;92          if (!count) return str.substring(start, i);93        }94        return 'unknown';95      }96      /**97       * @param {DocumentFragment} content98       */99      function parseClass(content) {100        const members = [];101        const headers = content.querySelectorAll('h4');102        const name = content.firstChild.textContent;103        let extendsName = null;104        let commentStart = content.firstChild.nextSibling;105        const extendsElement = content.querySelector('ul');106        if (107          extendsElement &&108          extendsElement.textContent.trim().startsWith('extends:')109        ) {110          commentStart = extendsElement.nextSibling;111          extendsName = extendsElement.querySelector('a').textContent;112        }113        const comment = parseComment(114          extractSiblingsIntoFragment(commentStart, headers[0])115        );116        for (let i = 0; i < headers.length; i++) {117          const fragment = extractSiblingsIntoFragment(118            headers[i],119            headers[i + 1]120          );121          members.push(parseMember(fragment));122        }123        return {124          name,125          comment,126          extendsName,127          members,128        };129      }130      /**131       * @param {Node} content132       */133      function parseComment(content) {134        for (const code of content.querySelectorAll('pre > code'))135          code.replaceWith(136            '```' +137              code.className.substring('language-'.length) +138              '\n' +139              code.textContent +140              '```'141          );142        for (const code of content.querySelectorAll('code'))143          code.replaceWith('`' + code.textContent + '`');144        for (const strong of content.querySelectorAll('strong'))145          strong.replaceWith('**' + parseComment(strong) + '**');146        return content.textContent.trim();147      }148      /**149       * @param {string} name150       * @param {DocumentFragment} content151       */152      function parseMember(content) {153        const name = content.firstChild.textContent;154        const args = [];155        let returnType = null;156        const paramRegex = /^\w+\.[\w$]+\((.*)\)$/;157        const matches = paramRegex.exec(name) || ['', ''];158        const parameters = matches[1];159        const optionalStartIndex = parameters.indexOf('[');160        const optinalParamsStr =161          optionalStartIndex !== -1162            ? parameters.substring(optionalStartIndex).replace(/[\[\]]/g, '')163            : '';164        const optionalparams = new Set(165          optinalParamsStr166            .split(',')167            .filter((x) => x)168            .map((x) => x.trim())169        );170        const ul = content.querySelector('ul');171        for (const element of content.querySelectorAll('h4 + ul > li')) {172          if (173            element.matches('li') &&174            element.textContent.trim().startsWith('<')175          ) {176            returnType = parseProperty(element);177          } else if (178            element.matches('li') &&179            element.firstChild.matches &&180            element.firstChild.matches('code')181          ) {182            const property = parseProperty(element);183            property.required = !optionalparams.has(property.name);184            args.push(property);185          } else if (186            element.matches('li') &&187            element.firstChild.nodeType === Element.TEXT_NODE &&188            element.firstChild.textContent.toLowerCase().startsWith('return')189          ) {190            returnType = parseProperty(element);191            const expectedText = 'returns: ';192            let actualText = element.firstChild.textContent;193            let angleIndex = actualText.indexOf('<');194            let spaceIndex = actualText.indexOf(' ');195            angleIndex = angleIndex === -1 ? actualText.length : angleIndex;196            spaceIndex = spaceIndex === -1 ? actualText.length : spaceIndex + 1;197            actualText = actualText.substring(198              0,199              Math.min(angleIndex, spaceIndex)200            );201            if (actualText !== expectedText)202              errors.push(203                `${name} has mistyped 'return' type declaration: expected exactly '${expectedText}', found '${actualText}'.`204              );205          }206        }207        const comment = parseComment(208          extractSiblingsIntoFragment(ul ? ul.nextSibling : content)209        );210        return {211          name,212          args,213          returnType,214          comment,215        };216      }217      /**218       * @param {!Node} fromInclusive219       * @param {!Node} toExclusive220       * @returns {!DocumentFragment}221       */222      function extractSiblingsIntoFragment(fromInclusive, toExclusive) {223        const fragment = document.createDocumentFragment();224        let node = fromInclusive;225        while (node && node !== toExclusive) {226          const next = node.nextSibling;227          fragment.appendChild(node);228          node = next;229        }230        return fragment;231      }232    });233    return new MDOutline(classes, errors);234  }235  constructor(classes, errors) {236    this.classes = [];...

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