esbuild not bundling files

Question

I am trying to use esbuild to bundle and minify my files in an npm project. It is minimizing every file that I pass in, but it is not bundling. It gives me the error that I must use 'outdir' when there are multiple files. However, this gives me back all of those files, minimized, in a folder. This is not the behavior that I want and is not bundling. I just want it to take all of those files and merge them into one.

let {build} = require("esbuild");
let files = ["file1.js", "file2.js"];

build({
    entryPoints: files,
    outdir: "./views/dashboardPage/bundle",
    minify: true,
    bundle: true
}).catch(() => process.exit(1));

I have bundle set to true, but it still demands that I use outdir and it just returns those files to me, minimized. They have basically 0 documentation on this and every post online about it has just copy/pasted the README from the GitHub. How can I make it bundle?

Answer 1

Based on Alexander response I finally came to this solution to pack a whole folder into a single file:

const esbuild = require('esbuild');
const glob = require('glob');

esbuild
    .build({
        stdin: { contents: '' },
        inject: glob.sync('src/js/**/*.js'),
        bundle: true,
        sourcemap: true,
        minify: true,
        outfile: 'web/js/bundle.js',
    })
    .then(() => console.log("⚡ Javascript build complete! ⚡"))
    .catch(() => process.exit(1))

Answer 2

You can use inject option (https://esbuild.github.io/api/#inject), for example,

const options = {
  entryPoints: ['index.js'],
  inject: ['file1.js', ..., 'fileN.js'],
  bundle: true,
  minify: true,
  sourcemap: true,
  outdir: path,
};
esbuild.buildSync(options);