40 lines
1.2 KiB
TypeScript
40 lines
1.2 KiB
TypeScript
import { Plugin } from "esbuild";
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import * as fs from "fs";
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import path from "path";
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const JS_EXTENSIONS = new Set(["js", "cjs", "mjs"]);
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export const lodashReplacePlugin: Plugin = {
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name: "replaceLodashWithLodashEsForEsm",
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setup: (build) => {
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// original code: https://github.com/josteph/esbuild-plugin-lodash
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if (build.initialOptions.format === "cjs") {
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return;
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}
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build.onLoad({ filter: /.*/ }, async (args) => {
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const contents = await fs.promises.readFile(args.path, "utf8");
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const extension = path.extname(args.path).replace(".", "");
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const loader = JS_EXTENSIONS.has(extension)
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? "jsx"
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: (extension as any);
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const lodashImportRegex =
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/import\s+?(?:(?:(?:[\w*\s{},]*)\s+from\s+?)|)[\'\"](?:(?:lodash\/?.*?))[\'\"][\s]*?(?:;|$|)/g;
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const isExternal = !args.path.startsWith(process.cwd());
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const lodashImports = contents.match(lodashImportRegex);
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if (!lodashImports || isExternal) {
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return;
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}
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return {
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loader,
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contents: contents.replace(/lodash/g, "lodash-es"),
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};
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});
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},
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};
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