execli/lib/compile.js

Generate task-oriented CLIs declaratively

import { mkdtemp, rm, writeFile } from "node:fs/promises";
import { dirname, join, resolve } from "node:path";
import { fileURLToPath, pathToFileURL } from "node:url";
// @ts-expect-error: No type declarations available.
import ncc from "@vercel/ncc";
const packageLibDirectory = dirname(fileURLToPath(import.meta.url));
const getSource = (commandsUrl) => `#!/usr/bin/env node

import {runCli} from "../commands.js";

import * as commands from "${commandsUrl.href}";

runCli(commands);`;
export const compile = async ({ source, target, }) => {
    // The temporary directory needs to be inside the package for imports to resolve correctly.
    const temporaryDirectory = await mkdtemp(join(packageLibDirectory, "compiling-"));
    const inputPath = join(temporaryDirectory, "input.js");
    const sourceUrl = pathToFileURL(resolve(source));
    try {
        await writeFile(inputPath, getSource(sourceUrl));
        // eslint-disable-next-line @typescript-eslint/no-unsafe-call
        const { code } = (await ncc(inputPath, {
            minify: true,
            quiet: true,
        }));
        await writeFile(target, code, { mode: 0o744 });
    }
    finally {
        await rm(temporaryDirectory, { recursive: true });
    }
};
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