diff --git a/.travis.yml b/.travis.yml index 929d5ed..5f98a89 100644 --- a/.travis.yml +++ b/.travis.yml @@ -1,9 +1,9 @@ language: node_js node_js: - - "0.10" - - "0.12" - "4" - - "5" + - "6" + - "8" + - "9" script: - npm test diff --git a/README.md b/README.md index da42d46..108c7a9 100644 --- a/README.md +++ b/README.md @@ -139,9 +139,6 @@ myModule.__with__({ Limitations ----------- -**Using `const`**
-It's not possible to rewire `const` (see [#79](https://github.com/jhnns/rewire/issues/79)). This can probably be solved with [proxies](https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Proxy) someday but requires further research. - **Transpilers**
Some transpilers, like babel, rename variables in order to emulate certain language features. Rewire will not work in these cases (see [#62](https://github.com/jhnns/rewire/issues/62)). A possible solution might be switching to [babel-plugin-rewire](https://github.com/speedskater/babel-plugin-rewire). diff --git a/lib/index.js b/lib/index.js index 11229ff..0edcd2c 100644 --- a/lib/index.js +++ b/lib/index.js @@ -13,4 +13,4 @@ function rewire(filename) { module.exports = rewire; -delete require.cache[__filename]; // deleting self from module cache so the parent module is always up to date \ No newline at end of file +delete require.cache[__filename]; // deleting self from module cache so the parent module is always up to date diff --git a/lib/moduleEnv.js b/lib/moduleEnv.js index 8ad7891..789ea2f 100644 --- a/lib/moduleEnv.js +++ b/lib/moduleEnv.js @@ -2,12 +2,15 @@ var Module = require("module"), fs = require("fs"), + babelCore = require("babel-core"), + // Requiring the babel plugin here because otherwise it will be lazy-loaded by Babel during rewire() + transformBlockScoping = require("babel-plugin-transform-es2015-block-scoping"), coffee; - // caching original wrapper var moduleWrapper0 = Module.wrapper[0], moduleWrapper1 = Module.wrapper[1], originalExtensions = {}, + matchCoffeeExt = /\.coffee$/, nodeRequire, currentModule; @@ -26,7 +29,6 @@ function load(targetModule) { function reset() { Module.wrapper[0] = moduleWrapper0; Module.wrapper[1] = moduleWrapper1; - restoreExtensions(); } function inject(prelude, appendix) { @@ -47,23 +49,48 @@ function requireProxy(path) { } function registerExtensions() { + var originalJsExtension = require.extensions[".js"]; var originalCoffeeExtension = require.extensions[".coffee"]; + if (originalJsExtension) { + originalExtensions.js = originalJsExtension; + } if (originalCoffeeExtension) { originalExtensions.coffee = originalCoffeeExtension; } + require.extensions[".js"] = jsExtension; require.extensions[".coffee"] = coffeeExtension; } function restoreExtensions() { + if ("js" in originalExtensions) { + require.extensions[".js"] = originalExtensions.js; + } if ("coffee" in originalExtensions) { require.extensions[".coffee"] = originalExtensions.coffee; } } +function jsExtension(module, filename) { + var _compile = module._compile; + + module._compile = function (content, filename) { + content = babelCore.transform(content, { + plugins: ["transform-es2015-block-scoping"], + retainLines: true, + filename: filename + }).code; + _compile.call(module, content, filename); + }; + + restoreExtensions(); + originalExtensions.js(module, filename); +} + function coffeeExtension(module, filename) { var content = stripBOM(fs.readFileSync(filename, "utf8")); + restoreExtensions(); content = coffee.compile(content, { filename: filename, bare: true diff --git a/lib/rewire.js b/lib/rewire.js index c52bbeb..cbd24c2 100644 --- a/lib/rewire.js +++ b/lib/rewire.js @@ -1,5 +1,6 @@ var Module = require("module"), fs = require("fs"), + path = require("path"), getImportGlobalsSrc = require("./getImportGlobalsSrc.js"), getDefinePropertySrc = require("./getDefinePropertySrc.js"), detectStrictMode = 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"integrity": "sha1-TcGeZk38y+Jb2NtQiwDG2hWCVdE=", + "dev": true + }, + "trim-right": { + "version": "1.0.1", + "resolved": "https://registry.npmjs.org/trim-right/-/trim-right-1.0.1.tgz", + "integrity": "sha1-yy4SAwZ+DI3h9hQJS5/kVwTqYAM=" + } + } +} diff --git a/package.json b/package.json index 223a59b..16ba88e 100644 --- a/package.json +++ b/package.json @@ -36,7 +36,11 @@ }, "license": "MIT", "scripts": { - "test": "mocha -R spec --check-leaks", + "test": "mocha -R spec", "coverage": "istanbul cover ./node_modules/mocha/bin/_mocha" + }, + "dependencies": { + "babel-core": "^6.26.0", + "babel-plugin-transform-es2015-block-scoping": "^6.26.0" } } diff --git a/test/getImportGlobalsSrc.test.js b/test/getImportGlobalsSrc.test.js index ab9e946..28ac50c 100644 --- a/test/getImportGlobalsSrc.test.js +++ b/test/getImportGlobalsSrc.test.js @@ -25,6 +25,7 @@ describe("getImportGlobalsSrc", function () { delete global.module; delete global.exports; delete global.require; + delete global['__core-js_shared__']; delete global['a-b']; expectedGlobals = Object.keys(global); @@ -60,7 +61,7 @@ describe("getImportGlobalsSrc", function () { // node v0.10 does not set a constructor property on the context // node v0.11 does set a constructor property // so just lets filter it, because it doesn't make sense to mock it anyway - return key !== "constructor"; + return key !== "constructor" }); actualGlobals.sort(); expectedGlobals.sort(); diff --git a/test/rewire.test.js b/test/rewire.test.js index ecf3cc9..b6e1499 100644 --- a/test/rewire.test.js +++ b/test/rewire.test.js @@ -16,9 +16,7 @@ describe("rewire", function () { fs.renameSync(fakeNodeModules, path.resolve(__dirname, "../testLib/node_modules")); } }); - it("should pass all shared test cases", function () { - require("../testLib/sharedTestCases.js"); - }); + require("../testLib/sharedTestCases.js")(); it("should also work with CoffeeScript", function () { var coffeeModule; diff --git a/testLib/constModule.js b/testLib/constModule.js new file mode 100644 index 0000000..77396d9 --- /dev/null +++ b/testLib/constModule.js @@ -0,0 +1,13 @@ +const someOtherModule = require("./someOtherModule"); +const language = "nl"; + +exports.getLang = () => { + return language; +}; + +exports.getOtherModuleName = () => { + return someOtherModule.name; +}; + +exports.filename = __filename; +exports.dirname = __dirname; diff --git a/testLib/sharedTestCases.js b/testLib/sharedTestCases.js index 54e4218..b6caf6a 100644 --- a/testLib/sharedTestCases.js +++ b/testLib/sharedTestCases.js @@ -17,7 +17,7 @@ function checkForTypeError(err) { expect(err.constructor).to.be(TypeError); } -describe("rewire " + (typeof testEnv === "undefined"? "(node)": "(" + testEnv + ")"), function () { +module.exports = function () { it("should work like require()", function () { rewire("./moduleA.js").getFilename(); @@ -265,7 +265,7 @@ describe("rewire " + (typeof testEnv === "undefined"? "(node)": "(" + testEnv + throwError(); } catch (err) { if (err.stack) { - expect(err.stack.split("\n")[1]).to.match(/:2:11/); + expect(err.stack.split("\n")[1]).to.match(/:7:11/); } } }); @@ -372,4 +372,22 @@ describe("rewire " + (typeof testEnv === "undefined"? "(node)": "(" + testEnv + revert(); }); -}); + it("should be possible to mock a set a const variable using __set__ syntax", function() { + var constModule = rewire("./constModule"); + + constModule.__set__("language", "de"); + constModule.__set__("someOtherModule", { + name: "differentModule" + }); + expect(constModule.getLang()).to.equal("de"); + expect(constModule.getOtherModuleName()).to.equal("differentModule"); + }) + + it("should have correct __filename and __dirname when mocked using convertConst", function() { + var constModule = rewire("./constModule"); + + expect(constModule.filename).to.equal(require("./constModule").filename); + expect(constModule.dirname).to.equal(require("./constModule").dirname); + }); + +}; diff --git a/testLib/someOtherModule.js b/testLib/someOtherModule.js index da38f4c..fe6bbd7 100644 --- a/testLib/someOtherModule.js +++ b/testLib/someOtherModule.js @@ -3,4 +3,5 @@ __filename = "/test/testModules/someOtherModule.js"; exports.fs = {}; -exports.filename = __filename; \ No newline at end of file +exports.filename = __filename; +exports.name = "somOtherModule"; diff --git a/testLib/throwError.js b/testLib/throwError.js index 9bdf68b..ffb6a71 100644 --- a/testLib/throwError.js +++ b/testLib/throwError.js @@ -1,3 +1,8 @@ +// Using const here because we know that Babel will transform that part +const test = 1; + module.exports = function () { + let test = 1; + throw new Error(); };