43 lines
1 KiB
JavaScript
43 lines
1 KiB
JavaScript
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const fs = require("fs");
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const path = require("path");
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const Terser = require("terser");
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const LIB_DIR = path.join(__dirname, "..", "lib");
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const PATH = path.join(LIB_DIR, "preamble.js");
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const MIN_PATH = path.join(LIB_DIR, "preamble.min.js");
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const DART_PATH = path.join(LIB_DIR, "preamble.dart");
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const preamble = fs.readFileSync(PATH).toString();
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const { code: minified, error } = Terser.minify(preamble, {
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// Needed for Webpack require override.
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compress: {
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conditionals: false
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}
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});
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if (error) {
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throw error;
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}
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fs.writeFileSync(MIN_PATH, minified);
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fs.writeFileSync(DART_PATH, `library node_preamble;
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final _minified = r\"""${minified}\""";
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final _normal = r\"""
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${preamble}\""";
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/// Returns the text of the preamble.
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///
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/// If [minified] is true, returns the minified version rather than the
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/// human-readable version.
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String getPreamble({bool minified: false, List<String> additionalGlobals: const []}) =>
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(minified ? _minified : _normal) +
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(additionalGlobals.map((global) => "self.\$global=\$global;").join());
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`);
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