build.js

const { glob } = require("glob");
const { build } = require("esbuild");

async function buildESM() {
    await build({
        entryPoints: glob.sync("src/**/*.ts"),
        outdir: "dist/esm",
        sourcemap: true,
        splitting: true,
        format: "esm",
        target: ["esnext"],
    });
}

async function buildCJS() {
    await build({
        entryPoints: glob.sync("src/**/*.ts"),
        outdir: "dist/cjs",
        sourcemap: true,
        format: "cjs",
        target: ["esnext"],
    });
}

async function buildIIEF() {
    await Promise.all([
        build({
            entryPoints: ["src/index.ts"],
            outfile: "dist/index.js",
            bundle: true,
            sourcemap: true,
            platform: "browser",
            target: "chrome58",
            globalName: "OpenSubs",
        }),
        build({
            entryPoints: ["src/index.ts"],
            outfile: "dist/index.min.js",
            bundle: true,
            minify: true,
            sourcemap: true,
            platform: "browser",
            target: "chrome58",
            globalName: "OpenSubs",
        }),
    ]);
}

Promise.all([buildESM(), buildCJS(), buildIIEF()]);