lix-website/themes/lix/assets/bootstrap/node_modules/istanbul-lib-instrument/dist/instrumenter.js
2024-04-26 22:49:34 -06:00

182 lines
6 KiB
JavaScript

"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = void 0;
var _core = require("@babel/core");
var _schema = require("@istanbuljs/schema");
var _visitor = _interopRequireDefault(require("./visitor"));
var _readCoverage = _interopRequireDefault(require("./read-coverage"));
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
/*
Copyright 2012-2015, Yahoo Inc.
Copyrights licensed under the New BSD License. See the accompanying LICENSE file for terms.
*/
/**
* Instrumenter is the public API for the instrument library.
* It is typically used for ES5 code. For ES6 code that you
* are already running under `babel` use the coverage plugin
* instead.
* @param {Object} opts optional.
* @param {string} [opts.coverageVariable=__coverage__] name of global coverage variable.
* @param {boolean} [opts.preserveComments=false] preserve comments in output
* @param {boolean} [opts.compact=true] generate compact code.
* @param {boolean} [opts.esModules=false] set to true to instrument ES6 modules.
* @param {boolean} [opts.autoWrap=false] set to true to allow `return` statements outside of functions.
* @param {boolean} [opts.produceSourceMap=false] set to true to produce a source map for the instrumented code.
* @param {Array} [opts.ignoreClassMethods=[]] set to array of class method names to ignore for coverage.
* @param {Function} [opts.sourceMapUrlCallback=null] a callback function that is called when a source map URL
* is found in the original code. This function is called with the source file name and the source map URL.
* @param {boolean} [opts.debug=false] - turn debugging on
* @param {array} [opts.parserPlugins] - set babel parser plugins, see @istanbuljs/schema for defaults.
*/
class Instrumenter {
constructor(opts = {}) {
this.opts = { ..._schema.defaults.instrumenter,
...opts
};
this.fileCoverage = null;
this.sourceMap = null;
}
/**
* instrument the supplied code and track coverage against the supplied
* filename. It throws if invalid code is passed to it. ES5 and ES6 syntax
* is supported. To instrument ES6 modules, make sure that you set the
* `esModules` property to `true` when creating the instrumenter.
*
* @param {string} code - the code to instrument
* @param {string} filename - the filename against which to track coverage.
* @param {object} [inputSourceMap] - the source map that maps the not instrumented code back to it's original form.
* Is assigned to the coverage object and therefore, is available in the json output and can be used to remap the
* coverage to the untranspiled source.
* @returns {string} the instrumented code.
*/
instrumentSync(code, filename, inputSourceMap) {
if (typeof code !== 'string') {
throw new Error('Code must be a string');
}
filename = filename || String(new Date().getTime()) + '.js';
const {
opts
} = this;
let output = {};
const babelOpts = {
configFile: false,
babelrc: false,
ast: true,
filename: filename || String(new Date().getTime()) + '.js',
inputSourceMap,
sourceMaps: opts.produceSourceMap,
compact: opts.compact,
comments: opts.preserveComments,
parserOpts: {
allowReturnOutsideFunction: opts.autoWrap,
sourceType: opts.esModules ? 'module' : 'script',
plugins: opts.parserPlugins
},
plugins: [[({
types
}) => {
const ee = (0, _visitor.default)(types, filename, {
coverageVariable: opts.coverageVariable,
coverageGlobalScope: opts.coverageGlobalScope,
coverageGlobalScopeFunc: opts.coverageGlobalScopeFunc,
ignoreClassMethods: opts.ignoreClassMethods,
inputSourceMap
});
return {
visitor: {
Program: {
enter: ee.enter,
exit(path) {
output = ee.exit(path);
}
}
}
};
}]]
};
const codeMap = (0, _core.transformSync)(code, babelOpts);
if (!output || !output.fileCoverage) {
const initialCoverage = (0, _readCoverage.default)(codeMap.ast) ||
/* istanbul ignore next: paranoid check */
{};
this.fileCoverage = initialCoverage.coverageData;
this.sourceMap = inputSourceMap;
return code;
}
this.fileCoverage = output.fileCoverage;
this.sourceMap = codeMap.map;
const cb = this.opts.sourceMapUrlCallback;
if (cb && output.sourceMappingURL) {
cb(filename, output.sourceMappingURL);
}
return codeMap.code;
}
/**
* callback-style instrument method that calls back with an error
* as opposed to throwing one. Note that in the current implementation,
* the callback will be called in the same process tick and is not asynchronous.
*
* @param {string} code - the code to instrument
* @param {string} filename - the filename against which to track coverage.
* @param {Function} callback - the callback
* @param {Object} inputSourceMap - the source map that maps the not instrumented code back to it's original form.
* Is assigned to the coverage object and therefore, is available in the json output and can be used to remap the
* coverage to the untranspiled source.
*/
instrument(code, filename, callback, inputSourceMap) {
if (!callback && typeof filename === 'function') {
callback = filename;
filename = null;
}
try {
const out = this.instrumentSync(code, filename, inputSourceMap);
callback(null, out);
} catch (ex) {
callback(ex);
}
}
/**
* returns the file coverage object for the last file instrumented.
* @returns {Object} the file coverage object.
*/
lastFileCoverage() {
return this.fileCoverage;
}
/**
* returns the source map produced for the last file instrumented.
* @returns {null|Object} the source map object.
*/
lastSourceMap() {
return this.sourceMap;
}
}
var _default = Instrumenter;
exports.default = _default;