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Split export extensions into 2 different plugins, update stage presets (
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...-transform-export-extensions/package.json → ...gin-transform-export-default/package.json
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packages/babel-plugin-transform-export-default/test/fixtures/export-default/options.json
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{ | ||
"plugins": ["external-helpers", "transform-export-default"] | ||
} |
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...ransform-export-extensions/test/fixtures/export-extensions/namespace-default/options.json
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src | ||
test | ||
*.log |
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packages/babel-plugin-transform-export-namespace/README.md
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# babel-plugin-transform-export-namespace | ||
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> Compile export-ns-from statements to ES2015 | ||
## Example | ||
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```js | ||
export * as ns from 'mod'; | ||
``` | ||
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## Installation | ||
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```sh | ||
npm install --save-dev babel-plugin-transform-export-namespace | ||
``` | ||
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## Usage | ||
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### Via `.babelrc` (Recommended) | ||
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**.babelrc** | ||
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```json | ||
{ | ||
"plugins": ["transform-export-namespace"] | ||
} | ||
``` | ||
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### Via CLI | ||
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```sh | ||
babel --plugins transform-export-namespace script.js | ||
``` | ||
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### Via Node API | ||
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```javascript | ||
require("babel-core").transform("code", { | ||
plugins: ["transform-export-namespace"] | ||
}); | ||
``` | ||
## References | ||
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* ~~[Proposal: Additional export-from statements in ES7](https://github.com/leebyron/ecmascript-more-export-from)~~ (Withdrawn) | ||
* [ECMAScript Proposal: export ns from](https://github.com/leebyron/ecmascript-export-ns-from) |
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packages/babel-plugin-transform-export-namespace/package.json
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{ | ||
"name": "babel-plugin-transform-export-namespace", | ||
"version": "7.0.0-alpha.19", | ||
"description": "Compile export namespace to ES2015", | ||
"repository": "https://github.com/babel/babel/tree/master/packages/babel-plugin-transform-export-namespace", | ||
"license": "MIT", | ||
"main": "lib/index.js", | ||
"keywords": [ | ||
"babel-plugin" | ||
], | ||
"dependencies": { | ||
"babel-plugin-syntax-export-extensions": "7.0.0-alpha.19" | ||
}, | ||
"devDependencies": { | ||
"babel-helper-plugin-test-runner": "7.0.0-alpha.19" | ||
} | ||
} |
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packages/babel-plugin-transform-export-namespace/src/index.js
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import syntaxExportExtensions from "babel-plugin-syntax-export-extensions"; | ||
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export default function({ types: t }) { | ||
function build(node, nodes, scope) { | ||
const hasNoExportNs = node.specifiers.every( | ||
specifier => !t.isExportNamespaceSpecifier(specifier), | ||
); | ||
if (hasNoExportNs) return; | ||
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const specifier = node.specifiers.shift(); | ||
const uid = scope.generateUidIdentifier(specifier.exported.name); | ||
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let newSpecifier; | ||
if (t.isExportNamespaceSpecifier(specifier)) { | ||
newSpecifier = t.importNamespaceSpecifier(uid); | ||
} else { | ||
newSpecifier = t.importDefaultSpecifier(uid); | ||
} | ||
nodes.push(t.importDeclaration([newSpecifier], node.source)); | ||
nodes.push( | ||
t.exportNamedDeclaration(null, [ | ||
t.exportSpecifier(uid, specifier.exported), | ||
]), | ||
); | ||
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build(node, nodes, scope); | ||
} | ||
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return { | ||
inherits: syntaxExportExtensions, | ||
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visitor: { | ||
ExportNamedDeclaration(path) { | ||
const { node, scope } = path; | ||
const nodes = []; | ||
build(node, nodes, scope); | ||
if (!nodes.length) return; | ||
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if (node.specifiers.length >= 1) { | ||
nodes.push(node); | ||
} | ||
path.replaceWithMultiple(nodes); | ||
}, | ||
}, | ||
}; | ||
} |
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packages/babel-plugin-transform-export-namespace/test/fixtures/export-namespace/options.json
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{ | ||
"plugins": ["external-helpers", "transform-export-namespace"] | ||
} |
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packages/babel-plugin-transform-export-namespace/test/index.js
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import runner from "babel-helper-plugin-test-runner"; | ||
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runner(__dirname); |
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import presetStage3 from "babel-preset-stage-3"; | ||
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import transformFunctionSent from "babel-plugin-transform-function-sent"; | ||
import transformExportNamespace from "babel-plugin-transform-export-namespace"; | ||
import transformNumericSeparator from "babel-plugin-transform-numeric-separator"; | ||
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export default function() { | ||
return { | ||
presets: [presetStage3], | ||
plugins: [transformFunctionSent, transformNumericSeparator], | ||
plugins: [ | ||
transformFunctionSent, | ||
transformExportNamespace, | ||
transformNumericSeparator, | ||
], | ||
}; | ||
} |
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