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How to use defaultWalker method in istanbul

Best JavaScript code snippet using istanbul

index.js

Source:index.js

1'use strict';2const Readable = require('stream').Readable;3const each = require('async-each');4const walkers = require('./walkers');5/**6 * Scans levels in file system.7 *8 * If file or directory is valid BEM entity then `add` will be called with info about this file.9 *10 * @param {string[]} levels                The paths to levels.11 * @param {object} options                 The options.12 * @param {object} options.levels          The level map. A key is path to a level,13 *                                         a value is an options object for this level.14 * @param {object} options.defaults        The options for levels by default.15 * @param {object} options.defaults.naming Any options for `@bem/naming`.16 * @param {string} options.defaults.scheme The name of level scheme. Available values: `flat` or `nested`.17 *18 * @returns {module:stream.Readable} stream with info about found files and directories.19 */20module.exports = (levels, options) => {21    options || (options = {});22    const defaults = options.defaults || {};23    const levelConfigs = options.levels || {};24    const defaultNaming = defaults.naming;25    const defaultWalker = (typeof defaults.scheme === 'string' ? walkers[defaults.scheme] : defaults.scheme)26        || walkers.nested;27    const output = new Readable({ objectMode: true, read: () => {} });28    const add = (obj) => output.push(obj);29    const scan = (level, callback) => {30        const config = levelConfigs[level];31        const scheme = config && config.scheme;32        const naming = config && config.naming || defaultNaming;33        const walk = typeof scheme === 'string' ? walkers[scheme] : (scheme || defaultWalker);34        walk({ path: level, naming: naming }, add, callback);35    };36    each(levels, scan, err => {37        err38            ? output.emit('error', err)39            : output.push(null);40    });41    return output;...

transpiler.js

Source:transpiler.js

1const jsYaml = require("js-yaml");2/**3 * noop walker to traverse and transform values.4 * @param {string} key5 * @param {any} value6 * @param {object} parent7 * @returns value8 */9const defaultWalker = (key, value, parent) => value;10/**11 * Plugable YAML -> JSON Transpiler12 */13class Transpiler {14  /**15   *16   * @param {string} yaml YAML format data17   * @param {function} walk18   */19  constructor(yaml, walk = defaultWalker) {20    this._json = null;21    this._object = null;22    this._yaml = yaml;23    this._walk = walk;24  }25  /**26   *27   * @returns {object} parsed YAML object28   */29  parse() {30    this._object = jsYaml.load(this._yaml);31    return this._object;32  }33  /**34   * traverse object recursively and apply waker function.35   * @param {void | object}36   * @returns37   */38  traverse(target = this._object) {39    for (var key in target) {40      if (target.hasOwnProperty(key)) {41        const value = this._walk(key, target[key], target);42        if (typeof value === "object") {43          return this.traverse(value);44        }45      }46    }47    return target;48  }49  /**50   * Return JSON format Data51   * @returns {string} Return JSON format Data52   */53  generate() {54    this._json = JSON.stringify(this._object, null, 2);55    return this._json;56  }57  toJSON() {58    return this._json;59  }60  transpile(format = "JSON") {61    this.parse();62    this.traverse();63    this.generate();64    if (format.toUpperCase() === "JSON") {65      return this.toJSON();66    } else {67      throw new Error(`Unrecognized format ${format}`);68    }69  }70}71module.exports.Transpiler = Transpiler;...

Using AI Code Generation

1var istanbul = require('istanbul');2var api = istanbul.api;3var collector = new istanbul.Collector();4var reporter = new istanbul.Reporter();5var defaultWalker = api.getDefaultWalker('js');6var opts = {7};8var callback = function (err, report) {9    if (err) {10        console.log('Error occurred: ', err);11        return;12    }13    console.log('Report: ', report);14};15var walker = defaultWalker('test.js', opts);16api.walkSync(walker, collector, reporter, sync, callback);17var istanbul = require('istanbul');18var api = istanbul.api;19var collector = new istanbul.Collector();20var reporter = new istanbul.Reporter();21var defaultWalker = api.getDefaultWalker('js');22var opts = {23};24var callback = function (err, report) {25    if (err) {26        console.log('Error occurred: ', err);27        return;28    }29    console.log('Report: ', report);30};31var walker = defaultWalker('test.js', opts);32api.walk(walker, collector, reporter, sync, callback);

Using AI Code Generation

1var istanbul = require('istanbul');2var defaultWalker = istanbul.utils.defaultWalker;3var esprima = require('esprima');4var fs = require('fs');5var myWalker = defaultWalker;6myWalker.on('FunctionDeclaration', function (node) {7    console.log(node);8});9var content = fs.readFileSync('test1.js', 'utf8');10var ast = esprima.parse(content);11istanbul.utils.traverse(ast, myWalker);

Using AI Code Generation

1var istanbul = require('istanbul');2var defaultWalker = istanbul.defaultWalker;3var walker = new defaultWalker();4var instrumenter = new istanbul.Instrumenter();5var fs = require('fs');6var esprima = require('esprima');7var escodegen = require('escodegen');8var escope = require('escope');9var estraverse = require('estraverse');10var path = require('path');11var esprimaOptions = {12};13var escodegenOptions = {14    format: {15        indent: {16        },17    },18    moz: {19    },20};21var code = fs.readFileSync('test.js', 'utf-8');22var ast = esprima.parse(code, esprimaOptions);23var scopeManager = escope.analyze(ast, {ecmaVersion: 6});24var instrumentedCode = instrumenter.instrumentSync(code, 'test.js');25var instrumentedAst = esprima.parse(instrumentedCode, esprimaOptions);26var instrumentedScopeManager = escope.analyze(instrumentedAst, {ecmaVersion: 6});27var instrumentedAst = instrumenter.instrumentSync(code, 'test.js');28var instrumentedAst = esprima.parse(instrumentedCode, esprimaOptions);29var instrumentedScopeManager = escope.analyze(instrumentedAst, {ecmaVersion: 6});30var instrumentedAst = instrumenter.instrumentSync(code, 'test.js');31var instrumentedAst = esprima.parse(instrumentedCode, esprimaOptions);32var instrumentedScopeManager = escope.analyze(instrumentedAst, {ecmaVersion: 6});

Using AI Code Generation

1var istanbul = require('istanbul');2var defaultWalker = istanbul.utils.defaultWalker;3var myWalker = function(node, callback) {4    if (node.type === 'FunctionDeclaration') {5        console.log(node);6    }7    defaultWalker(node, callback);8};9istanbul.utils.defaultWalker = myWalker;10var istanbul = require('istanbul');11var defaultWalker = istanbul.utils.defaultWalker;12var myWalker = function(node, callback) {13    if (node.type === 'FunctionDeclaration') {14        console.log(node);15    }16    defaultWalker(node, callback);17};18istanbul.utils.defaultWalker = myWalker;19var istanbul = require('istanbul');20var defaultWalker = istanbul.utils.defaultWalker;21var myWalker = function(node, callback) {22    if (node.type === 'FunctionDeclaration') {23        console.log(node);24    }25    defaultWalker(node, callback);26};27istanbul.utils.defaultWalker = myWalker;28var istanbul = require('istanbul');29var defaultWalker = istanbul.utils.defaultWalker;30var myWalker = function(node, callback) {31    if (node.type === 'FunctionDeclaration') {32        console.log(node);33    }34    defaultWalker(node, callback);35};36istanbul.utils.defaultWalker = myWalker;37var istanbul = require('istanbul');38var defaultWalker = istanbul.utils.defaultWalker;39var myWalker = function(node, callback) {40    if (node.type === 'FunctionDeclaration') {41        console.log(node);42    }43    defaultWalker(node, callback);44};45istanbul.utils.defaultWalker = myWalker;46var istanbul = require('istanbul');47var defaultWalker = istanbul.utils.defaultWalker;48var myWalker = function(node, callback) {49    if (node.type === 'FunctionDeclaration') {50        console.log(node);51    }52    defaultWalker(node, callback);53};54istanbul.utils.defaultWalker = myWalker;55var istanbul = require('istanbul');56var defaultWalker = istanbul.utils.defaultWalker;57var myWalker = function(node, callback)

Using AI Code Generation

1var istanbul = require('istanbul');2var defaultWalker = istanbul.getDefaultWalker();3var myWalker = {4    FunctionDeclaration: function(node) {5        console.log('FunctionDeclaration', node.id.name);6    }7};8istanbul.utils.merge(myWalker, defaultWalker);9console.log(myWalker);10var defaultParser = istanbul.getDefaultParser();11var myParser = {12    parse: function(code) {13        console.log('parse', code);14        return defaultParser.parse(code);15    }16};17istanbul.utils.merge(myParser, defaultParser);18console.log(myParser);19var defaultInstrumenter = istanbul.getDefaultInstrumenter();20var myInstrumenter = {21    instrumentSync: function(code, filename) {22        console.log('instrumentSync', code, filename);23        return defaultInstrumenter.instrumentSync(code, filename);24    }25};26istanbul.utils.merge(myInstrumenter, defaultInstrumenter);27console.log(myInstrumenter);28var defaultReporter = istanbul.getDefaultReporter();29var myReporter = {30    writeReport: function(collector, sync) {31        console.log('writeReport', collector, sync);32        return defaultReporter.writeReport(collector, sync);33    }34};35istanbul.utils.merge(myReporter, defaultReporter);36console.log(myReporter);37var defaultCollector = istanbul.getDefaultCollector();38var myCollector = {39    add: function(obj) {40        console.log('add', obj);41        return defaultCollector.add(obj);42    }43};44istanbul.utils.merge(myCollector, defaultCollector);45console.log(myCollector);46var defaultHook = istanbul.getDefaultHook();47var myHook = {48    hookRunInThisContext: function() {49        console.log('hookRunInThisContext');50        return defaultHook.hookRunInThisContext();51    }52};53istanbul.utils.merge(myHook, defaultHook);54console.log(myHook);55var defaultMatcher = istanbul.getDefaultMatcher();56var myMatcher = {57    matches: function(filename, patterns) {58        console.log('matches', filename, patterns);59        return defaultMatcher.matches(filename, patterns);60    }61};62istanbul.utils.merge(myMatcher

Using AI Code Generation

1import {defaultWalker} from 'istanbul-lib-instrument';2var a = 1;3var b = 2;4`;5const ast = acorn.parse(code, {ecmaVersion: 6});6const instrumenter = new Instrumenter();7const instrumentedCode = instrumenter.instrumentSync(code, 'test.js');8console.log(instrumentedCode);9console.log(ast);10const instrumentedAst = defaultWalker(ast, instrumenter);11console.log(instrumentedAst);12const instrumentedCode2 = instrumenter.lastSourceMap().toComment();13console.log(instrumentedCode2);

Using AI Code Generation

1var istanbul = require('istanbul');2var defaultWalker = istanbul.utils.defaultWalker;3var walker = defaultWalker();4walker.walk('test.js', function (node) {5    console.log(node);6});7{ type: 'Program',8  loc: { start: { line: 1, column: 0 }, end: { line: 4, column: 1 } },9   [ { type: 'FunctionDeclaration',10       expression: false },11     { type: 'EmptyStatement',12       loc: [Object] } ],13  sourceType: 'script' }14{ type: 'Program',15  loc: { start: { line: 1, column: 0 }, end: { line: 4, column: 1 } },16   [ { type: 'FunctionDeclaration',17       expression: false },18     { type: 'EmptyStatement',19       loc: [Object] } ],20  sourceType: 'script' }

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