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How to use precedingLastLine method in wpt

Best JavaScript code snippet using wpt

error.js

Source:error.js

1/**2 * @param {string} text3 */4function lastLine(text) {5  const splitted = text.split("\n");6  return splitted[splitted.length - 1];7}8function appendIfExist(base, target) {9  let result = base;10  if (target) {11    result += ` ${target}`;12  }13  return result;14}15function contextAsText(node) {16  const hierarchy = [node];17  while (node && node.parent) {18    const { parent } = node;19    hierarchy.unshift(parent);20    node = parent;21  }22  return hierarchy.map((n) => appendIfExist(n.type, n.name)).join(" -> ");23}24/**25 * @typedef {object} WebIDL2ErrorOptions26 * @property {"error" | "warning"} [level]27 * @property {Function} [autofix]28 *29 * @typedef {ReturnType<typeof error>} WebIDLErrorData30 *31 * @param {string} message error message32 * @param {"Syntax" | "Validation"} kind error type33 * @param {WebIDL2ErrorOptions} [options]34 */35function error(36  source,37  position,38  current,39  message,40  kind,41  { level = "error", autofix, ruleName } = {}42) {43  /**44   * @param {number} count45   */46  function sliceTokens(count) {47    return count > 048      ? source.slice(position, position + count)49      : source.slice(Math.max(position + count, 0), position);50  }51  function tokensToText(inputs, { precedes } = {}) {52    const text = inputs.map((t) => t.trivia + t.value).join("");53    const nextToken = source[position];54    if (nextToken.type === "eof") {55      return text;56    }57    if (precedes) {58      return text + nextToken.trivia;59    }60    return text.slice(nextToken.trivia.length);61  }62  const maxTokens = 5; // arbitrary but works well enough63  const line =64    source[position].type !== "eof"65      ? source[position].line66      : source.length > 167      ? source[position - 1].line68      : 1;69  const precedingLastLine = lastLine(70    tokensToText(sliceTokens(-maxTokens), { precedes: true })71  );72  const subsequentTokens = sliceTokens(maxTokens);73  const subsequentText = tokensToText(subsequentTokens);74  const subsequentFirstLine = subsequentText.split("\n")[0];75  const spaced = " ".repeat(precedingLastLine.length) + "^";76  const sourceContext = precedingLastLine + subsequentFirstLine + "\n" + spaced;77  const contextType = kind === "Syntax" ? "since" : "inside";78  const inSourceName = source.name ? ` in ${source.name}` : "";79  const grammaticalContext =80    current && current.name81      ? `, ${contextType} \`${current.partial ? "partial " : ""}${contextAsText(82          current83        )}\``84      : "";85  const context = `${kind} error at line ${line}${inSourceName}${grammaticalContext}:\n${sourceContext}`;86  return {87    message: `${context} ${message}`,88    bareMessage: message,89    context,90    line,91    sourceName: source.name,92    level,93    ruleName,94    autofix,95    input: subsequentText,96    tokens: subsequentTokens,97  };98}99/**100 * @param {string} message error message101 */102export function syntaxError(source, position, current, message) {103  return error(source, position, current, message, "Syntax");104}105/**106 * @param {string} message error message107 * @param {WebIDL2ErrorOptions} [options]108 */109export function validationError(110  token,111  current,112  ruleName,113  message,114  options = {}115) {116  options.ruleName = ruleName;117  return error(118    current.source,119    token.index,120    current,121    message,122    "Validation",123    options124  );...

Using AI Code Generation

1var wpt = require('wpt');2var options = {3};4wpt.runTest(options, function(err, data) {5  if (err) return console.log(err);6  console.log(data);7  wpt.getTestStatus(data.data.testId, function(err, data) {8    if (err) return console.log(err);9    console.log(data);10    wpt.getTestResults(data.data.testId, function(err, data) {11      if (err) return console.log(err);12      console.log(data);13      wpt.getTestResults(data.data.testId, function(err, data) {14        if (err) return console.log(err);15        console.log(data);16        wpt.getTestResults(data.data.testId, function(err, data) {17          if (err) return console.log(err);18          console.log(data);19        });20      });21    });22  });23});

Using AI Code Generation

1var wpt = require('wpt');2var fs = require('fs');3var util = require('util');4var options = {5};6wpt.runTest(options, function(err, data) {7    if (err) {8        console.log(err);9    } else {10        console.log(data);11        fs.writeFile('test.json', JSON.stringify(data), function(err) {12            if (err) {13                console.log(err);14            } else {15                console.log("JSON saved to test.json");16            }17        });18    }19});

Using AI Code Generation

1var wpt = require('wpt');2var wpt = new WebPageTest('www.webpagetest.org');3wpt.getTestStatus('160411_7Q_31c', function(err, data) {4  if (err) return console.error(err);5  var lastLine = wpt.precedingLastLine(data.data);6  console.log(lastLine);7});

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