52 lines
1.4 KiB
TypeScript
52 lines
1.4 KiB
TypeScript
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import esbuild from "esbuild";
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import { readFile, unlink, writeFile } from "fs/promises";
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import path from "path";
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export async function compile(
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filePath: string,
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functionName: string = "",
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debug: boolean = false,
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excludeModules: string[] = [],
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meta = false
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): Promise<string> {
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let outFile = path.join(path.dirname(filePath), "_out.tmp");
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let inFile = filePath;
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if (functionName) {
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// Generate a new file importing just this one function and exporting it
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inFile = "_in.ts";
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await writeFile(
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inFile,
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`import {${functionName}} from "./${filePath}";export default ${functionName};`
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);
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}
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// TODO: Figure out how to make source maps work correctly with eval() code
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let result = await esbuild.build({
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entryPoints: [path.basename(inFile)],
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bundle: true,
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format: "iife",
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globalName: "mod",
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platform: "browser",
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sourcemap: false, //sourceMap ? "inline" : false,
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minify: !debug,
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outfile: outFile,
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metafile: true,
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external: excludeModules,
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absWorkingDir: path.resolve(path.dirname(inFile)),
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});
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if (meta) {
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let text = await esbuild.analyzeMetafile(result.metafile);
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console.log("Bundle info for", functionName, text);
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}
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let jsCode = (await readFile(outFile)).toString();
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await unlink(outFile);
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if (inFile !== filePath) {
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await unlink(inFile);
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}
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return `(() => { ${jsCode}
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return mod;})()`;
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}
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