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author | Florian Dold <florian.dold@gmail.com> | 2016-10-10 03:43:44 +0200 |
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committer | Florian Dold <florian.dold@gmail.com> | 2016-10-10 03:43:44 +0200 |
commit | abd94a7f5a50f43c797a11b53549ae48fff667c3 (patch) | |
tree | ab8ed457f65cdd72e13e0571d2975729428f1551 /node_modules/typhonjs-istanbul-instrument-jspm/dist | |
parent | a0247c6a3fd6a09a41a7e35a3441324c4dcb58be (diff) | |
download | wallet-core-abd94a7f5a50f43c797a11b53549ae48fff667c3.tar.xz |
add node_modules to address #4364
Diffstat (limited to 'node_modules/typhonjs-istanbul-instrument-jspm/dist')
-rw-r--r-- | node_modules/typhonjs-istanbul-instrument-jspm/dist/instrumentIstanbulSystem.js | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/node_modules/typhonjs-istanbul-instrument-jspm/dist/instrumentIstanbulSystem.js b/node_modules/typhonjs-istanbul-instrument-jspm/dist/instrumentIstanbulSystem.js new file mode 100644 index 000000000..593260119 --- /dev/null +++ b/node_modules/typhonjs-istanbul-instrument-jspm/dist/instrumentIstanbulSystem.js @@ -0,0 +1,85 @@ +'use strict'; + +Object.defineProperty(exports, "__esModule", { + value: true +}); +exports.default = instrumentIstanbulSystem; + +var _istanbulLibInstrument = require('istanbul-lib-instrument'); + +var _istanbulLibInstrument2 = _interopRequireDefault(_istanbulLibInstrument); + +function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } + +// Good enough ES6 module detection regex. +// Format detections not designed to be accurate, but to handle the 99% use case. +var s_ESM_REGEX = /(^\s*|[}\);\n]\s*)(import\s*(['"]|(\*\s+as\s+)?[^"'\(\)\n;]+\s*from\s*['"]|\{)|export\s+\*\s+from\s+["']|export\s* (\{|default|function|class|var|const|let|async\s+function))/; + +/** + * Instruments JSPM / SystemJS replacing the `System.translate` hook adding Istanbul instrumentation of loaded source + * code before deferring the instrumented source for translation. The instrumentation process occurs on the original + * source code and supports ES5 and ES Modules (ES6+). + * + * @param {object} System - An instance of SystemJS. + * + * @param {RegExp} sourceFilePathRegex - A regex which defines which source files are instrumented; default excludes + * any sources with file paths that includes `jspm_packages`. + */ +function instrumentIstanbulSystem(System) { + var sourceFilePathRegex = arguments.length <= 1 || arguments[1] === undefined ? /^((?!jspm_packages).)*$/ : arguments[1]; + + /* istanbul ignore if */ + if (typeof System.translate !== 'function') { + throw new TypeError("instrumentIstanbulSystem - 'System' is not an instance of the SystemJS API."); + } + + /* istanbul ignore if */ + if (!(sourceFilePathRegex instanceof RegExp)) { + throw new TypeError("instrumentIstanbulSystem - 'sourceFilePathRegex' is not an instance of RexExp."); + } + + // Coverage variable created by Istanbul and stored in global variables. + var coverageVariable = Object.keys(global).filter(function (key) { + return key.startsWith('$$cov_'); + })[0]; + + /* istanbul ignore if */ + if (typeof coverageVariable === 'undefined') { + throw new TypeError('instrumentIstanbulSystem - Istanbul coverage variable could not be located in global variables.'); + } + + // ES5 instrumenter + var instrumenter = _istanbulLibInstrument2.default.createInstrumenter({ coverageVariable: coverageVariable }); + + // ES6 / ES Modules instrumenter + var instrumenterESM = _istanbulLibInstrument2.default.createInstrumenter({ coverageVariable: coverageVariable, esModules: true }); + + // Store the original `System.translate` hook. + var systemTranslate = System.translate; + + // Override SystemJS translate hook to instrument original sources with Istanbul. + System.translate = function (load) { + var filePath = load.address.substr(System.baseURL.length); + + // Use `sourceFilePathRegex` to test file path for source instrumentation. + if (sourceFilePathRegex.test(filePath)) { + /* istanbul ignore next */ + try { + // If a source file passes the ES6 / ES Module regex test then use the ESM instrumenter. + if (s_ESM_REGEX.test(load.source) || load.metadata.format === 'esm') { + load.source = instrumenterESM.instrumentSync(load.source, filePath); + } else { + load.source = instrumenter.instrumentSync(load.source, filePath); + } + } catch (err) { + var newErr = new Error('Unable to instrument \'' + load.name + '\' for Istanbul:\n\t' + err.message); + newErr.stack = 'Unable to instrument \'' + load.name + '\' for istanbul:\n\t' + err.stack; + newErr.originalErr = err.originalErr || err; + throw newErr; + } + } + + // Defer to the original `System.translate` hook. + return systemTranslate.call(System, load); + }; +}
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