46 lines
1.2 KiB
TypeScript
46 lines
1.2 KiB
TypeScript
import { declare } from "@babel/helper-plugin-utils";
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import syntaxDynamicImport from "@babel/plugin-syntax-dynamic-import";
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const SUPPORTED_MODULES = ["commonjs", "amd", "systemjs"];
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const MODULES_NOT_FOUND = `\
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@babel/plugin-proposal-dynamic-import depends on a modules
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transform plugin. Supported plugins are:
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- @babel/plugin-transform-modules-commonjs ^7.4.0
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- @babel/plugin-transform-modules-amd ^7.4.0
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- @babel/plugin-transform-modules-systemjs ^7.4.0
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If you are using Webpack or Rollup and thus don't want
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Babel to transpile your imports and exports, you can use
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the @babel/plugin-syntax-dynamic-import plugin and let your
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bundler handle dynamic imports.
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`;
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declare const PACKAGE_JSON: { name: string; version: string };
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export default declare(api => {
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api.assertVersion(7);
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return {
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name: "proposal-dynamic-import",
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inherits: syntaxDynamicImport.default,
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pre() {
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this.file.set(
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"@babel/plugin-proposal-dynamic-import",
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PACKAGE_JSON.version,
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);
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},
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visitor: {
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Program() {
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const modules = this.file.get("@babel/plugin-transform-modules-*");
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if (!SUPPORTED_MODULES.includes(modules)) {
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throw new Error(MODULES_NOT_FOUND);
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}
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},
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},
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};
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});
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