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Add support for emitting node modules from webpack
This has two fold impact: 1. Allows for arbitrary loaders to run in both node and browser environments (Fixes vercel#1825) 2. Optimizes the build time for modules. Risks: - Transitions all harmony code to utilize harmony end to end. Previously this had not happened, which may break users in unexpected ways. (See vercel#2508) - Require logic changed across the board to utilize node and webpack behaviors where possible, simplifying code, but potentially breaking things in the wild.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,8 @@ | ||
| // Webpack ApiPlugin aliases for node execution environment. | ||
| // https://github.com/webpack/webpack/blob/master/lib/APIPlugin.js | ||
| // | ||
| // Only used within the next server process and will be properly populated | ||
| // via the next runtime. | ||
|
|
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| // __webpack_require__.p = the bundle public path | ||
| exports.publicPath = '/_next/webpack' |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,35 @@ | ||
| export default class HarmonyCompatibilityDependencyTemplate { | ||
| apply (dep, source) { | ||
| source.insert(-10, ` | ||
| const __webpack_exports__ = module.exports = exports = {}; | ||
| Object.defineProperty(__webpack_exports__, "__esModule", { value: true }); | ||
| const __webpack_require__ = require; | ||
| __webpack_require__.o = function(object, property) { | ||
| return Object.prototype.hasOwnProperty.call(object, property); | ||
| }; | ||
| // Via MainTemplate | ||
| // define getter function for harmony exports | ||
| __webpack_require__.d = function(exports, name, getter) { | ||
| if(!__webpack_require__.o(exports, name)) { | ||
| Object.defineProperty(exports, name, { | ||
| configurable: false, | ||
| enumerable: true, | ||
| get: getter | ||
| }); | ||
| } | ||
| }; | ||
| // getDefaultExport function for compatibility with non-harmony modules"); | ||
| __webpack_require__.n = function(module) { | ||
| var getter = module && module.__esModule ? | ||
| function getDefault() { return module['default']; } : | ||
| function getModuleExports() { return module; }; | ||
| __webpack_require__.d(getter, 'a', getter); | ||
| return getter; | ||
| }; | ||
| `) | ||
| } | ||
| }; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,24 @@ | ||
| export default class HarmonyExportDependencyTemplate { | ||
| apply (dep, source) { | ||
| const used = dep.originModule.isUsed('default') | ||
| const content = this.getContent(dep.originModule, used) | ||
|
|
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| if (dep.range) { | ||
| source.replace(dep.rangeStatement[0], dep.range[0] - 1, `${content}(`) | ||
| source.replace(dep.range[1], dep.rangeStatement[1] - 1, ');') | ||
| return | ||
| } | ||
|
|
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| source.replace(dep.rangeStatement[0], dep.rangeStatement[1] - 1, content) | ||
| } | ||
|
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| getContent (module, used) { | ||
| const exportsName = module.exportsArgument || 'exports' | ||
| if (used) { | ||
| return `/* harmony default export */ ${exportsName}[${JSON.stringify( | ||
| used | ||
| )}] = ` | ||
| } | ||
| return '/* unused harmony default export */ var _unused_webpack_default_export = ' | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,60 @@ | ||
| export default class HarmonyImportSpecifierDependencyTemplate { | ||
| apply (dep, source) { | ||
| const content = this.getContent(dep) | ||
| source.replace(dep.range[0], dep.range[1] - 1, content) | ||
| } | ||
|
|
||
| getContent (dep) { | ||
| const importedModule = dep.importDependency.module | ||
| const defaultImport = | ||
| dep.directImport && | ||
| dep.id === 'default' && | ||
| !( | ||
| importedModule && | ||
| (!importedModule.meta || importedModule.meta.harmonyModule) && | ||
| !/node_modules/.test(importedModule.resource) | ||
| ) | ||
| const shortHandPrefix = this.getShortHandPrefix(dep) | ||
| const { importedVar } = dep | ||
| const importedVarSuffix = this.getImportVarSuffix( | ||
| dep, | ||
| defaultImport, | ||
| importedModule | ||
| ) | ||
|
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| if (dep.call && defaultImport) { | ||
| return `${shortHandPrefix}${importedVar}_default()` | ||
| } | ||
|
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| if (dep.call && dep.id) { | ||
| return `${shortHandPrefix}Object(${importedVar}${importedVarSuffix})` | ||
| } | ||
|
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| return `${shortHandPrefix}${importedVar}${importedVarSuffix}` | ||
| } | ||
|
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| getImportVarSuffix (dep, defaultImport, importedModule) { | ||
| if (defaultImport) { | ||
| return '_default.a' | ||
| } | ||
|
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| if (dep.id) { | ||
| const used = | ||
| importedModule && !/node_modules/.test(importedModule.resource) | ||
| ? importedModule.isUsed(dep.id) | ||
| : dep.id | ||
| const optionalComment = dep.id !== used ? ` /* ${dep.id} */` : '' | ||
| return `[${JSON.stringify(used)}${optionalComment}]` | ||
| } | ||
|
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| return '' | ||
| } | ||
|
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| getShortHandPrefix (dep) { | ||
| if (!dep.shorthand) { | ||
| return '' | ||
| } | ||
|
|
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| return `${dep.name}: ` | ||
| } | ||
| } |
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