esbuild_plugin_sveltekit_shim_env.ts

import type * as esbuild from 'esbuild';

import {render_env_shim_module} from './sveltekit_shim_env.js';

export interface Options {
	dev: boolean;
	public_prefix?: string;
	private_prefix?: string;
	env_dir?: string;
	env_files?: string[];
	ambient_env?: Record<string, string>;
}

export const esbuild_plugin_sveltekit_shim_env = ({
	dev,
	public_prefix,
	private_prefix,
	env_dir,
	env_files,
	ambient_env,
}: Options): esbuild.Plugin => ({
	name: 'sveltekit_shim_env',
	setup: (build) => {
		const namespace = 'sveltekit_shim_env';
		const filter = /^\$env\/(static|dynamic)\/(public|private)$/u;
		build.onResolve({filter}, ({path}) => ({path, namespace}));
		build.onLoad({filter: /.*/u, namespace}, async ({path}) => {
			const matches = filter.exec(path);
			const mode = matches![1] as 'static' | 'dynamic';
			const visibility = matches![2] as 'public' | 'private';
			return {
				loader: 'ts',
				contents: await render_env_shim_module(
					dev,
					mode,
					visibility,
					public_prefix,
					private_prefix,
					env_dir,
					env_files,
					ambient_env,
				),
			};
		});
	},
});