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silverbullet/plugbox/bin/plugbox-bundle.ts
2022-03-20 10:22:38 +01:00

79 lines
2.1 KiB
JavaScript
Executable File

#!/usr/bin/env node
import esbuild from "esbuild";
import { readFile, unlink, writeFile } from "fs/promises";
import path from "path";
import yargs from "yargs";
import { hideBin } from "yargs/helpers";
import {Manifest} from "../types";
async function compile(filePath : string, functionName : string, debug: boolean) {
let outFile = "out.js";
let inFile = filePath;
if (functionName) {
// Generate a new file importing just this one function and exporting it
inFile = "in.js";
await writeFile(
inFile,
`import {${functionName}} from "./${filePath}";
export default ${functionName};`
);
}
// TODO: Figure out how to make source maps work correctly with eval() code
let js = await esbuild.build({
entryPoints: [inFile],
bundle: true,
format: "iife",
globalName: "mod",
platform: "neutral",
sourcemap: false, //sourceMap ? "inline" : false,
minify: !debug,
outfile: outFile,
});
let jsCode = (await readFile(outFile)).toString();
jsCode = jsCode.replace(/^var mod ?= ?/, "");
await unlink(outFile);
if (inFile !== filePath) {
await unlink(inFile);
}
// Strip final ';'
return jsCode.substring(0, jsCode.length - 2);
}
async function bundle(manifestPath: string, sourceMaps: boolean) {
const rootPath = path.dirname(manifestPath);
const manifest = JSON.parse((await readFile(manifestPath)).toString()) as Manifest<any>;
for (let [name, def] of Object.entries(manifest.functions)) {
let jsFunctionName = "default",
filePath = path.join(rootPath, def.path!);
if (filePath.indexOf(":") !== -1) {
[filePath, jsFunctionName] = filePath.split(":");
}
def.code = await compile(filePath, jsFunctionName, sourceMaps);
delete def.path;
}
return manifest;
}
async function run() {
let args = await yargs(hideBin(process.argv))
.option("debug", {
type: "boolean",
})
.parse();
let generatedManifest = await bundle(args._[0] as string, !!args.debug);
await writeFile(args._[1] as string, JSON.stringify(generatedManifest, null, 2));
}
run().catch((e) => {
console.error(e);
process.exit(1);
});