@layerfig/config/dist/index.js

Layer and runtime-validate type-safe configs for JavaScript apps.

import { Source } from "./source-BvmiqUNz.js";
import "./set-LPILcL1N.js";
import { merge } from "./utils-B21a12rH.js";
import { z, z as z$1 } from "zod/v4";

//#region src/parser/define-config-parser.ts
function defineConfigParser({ acceptedFileExtensions, parse: load }) {
	return {
		acceptsExtension(fileExtension) {
			const ext = fileExtension.startsWith(".") ? fileExtension : `.${fileExtension}`;
			return acceptedFileExtensions.some((accepted) => accepted === ext || accepted === ext.slice(1));
		},
		acceptedFileExtensions,
		load
	};
}

//#endregion
//#region src/parser/parser-json.ts
const basicJsonParser = defineConfigParser({
	acceptedFileExtensions: ["json"],
	parse: (fileContent) => {
		try {
			const content = JSON.parse(fileContent);
			return {
				ok: true,
				data: content
			};
		} catch (error) {
			return {
				ok: false,
				error: error instanceof Error ? error : new Error("Something went wrong while loading the file")
			};
		}
	}
});

//#endregion
//#region src/config-builder.ts
var ConfigBuilder = class {
	#options;
	#sources = [];
	constructor(options) {
		this.#options = options;
	}
	build() {
		if (this.#sources.length === 0) throw new Error("No source was added. Please provide one by using .addSource(<source>)");
		let partialConfig = {};
		for (const source of this.#sources) {
			const data = source.loadSource({
				parser: this.#parser,
				runtimeEnv: this.#runtime,
				slotPrefix: this.#slotPrefix,
				relativeConfigFolderPath: this.#configFolder
			});
			partialConfig = merge({}, partialConfig, data);
		}
		return this.#options.validate(partialConfig, z$1);
	}
	addSource(source) {
		if (source instanceof Source === false) throw new Error("Invalid source. Please provide a valid one.");
		this.#sources.push(source);
		return this;
	}
	get #configFolder() {
		return this.#options.configFolder || "./config";
	}
	get #parser() {
		return this.#options.parser || basicJsonParser;
	}
	get #runtime() {
		return this.#options.runtimeEnv || process.env;
	}
	get #slotPrefix() {
		return this.#options.slotPrefix || "$";
	}
};

//#endregion
export { ConfigBuilder, defineConfigParser, z };
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