deno2node/lib/init.js

`tsc` replacement for transpiling Deno libraries to run on Node.js.

#!/usr/bin/env node
import * as fs from "node:fs/promises";
const shimFile = "// See https://github.com/fromdeno/deno2node#shimming";
const gitignore = "/lib/\n/node_modules/\n/src/vendor/";
const denoJson = '{ "exclude": ["lib/"] }';
async function download(url, target) {
    const response = await fetch(url);
    await fs.writeFile(target, await response.text(), { flag: "wx" });
}
export async function getVersion() {
    const packageUrl = new URL("../package.json", import.meta.url);
    const response = await fetch(packageUrl);
    const { version } = await response.json();
    return version;
}
async function createPackageJson() {
    const pkg = {
        "type": "module",
        "version": "0.0.0",
        "exports": "./lib/mod.js",
        "typings": "./lib/mod.d.ts",
        "files": [
            "lib/",
            "!lib/**/*.test.*",
            "!*/vendor/**/*.ts*",
        ],
        "scripts": {
            "fmt": "deno fmt",
            "lint": "deno lint",
            "test": "deno test",
            "prepare": "deno2node",
            "postprepare": "node --test lib/",
            "clean": "git clean -fXde !node_modules/",
        },
        "devDependencies": {
            "deno2node": `~${await getVersion()}`,
        },
    };
    await fs.writeFile("package.json", JSON.stringify(pkg, null, 2), {
        flag: "wx",
    });
}
export async function initializeProject() {
    const tsconfigUrl = new URL("../tsconfig.json", import.meta.url);
    await fs.mkdir("src/");
    await Promise.all([
        createPackageJson(),
        download(tsconfigUrl, "tsconfig.json"),
        fs.writeFile("deno.json", denoJson, { flag: "wx" }),
        fs.writeFile(".gitignore", gitignore, { flag: "wx" }),
        fs.writeFile("src/shim.node.ts", shimFile, { flag: "wx" }),
    ]);
}
// @ts-ignore not available on Node.js: https://github.com/nodejs/modules/issues/274
if (import.meta.main) {
    await initializeProject();
}
import { fetch } from "./shim.node.js";