@beyond-js/bundles-sdk/processor/base/sources/files-overwrites/hash/index.js

BeyondJS Bundles SDK

const DynamicProcessor = require('@beyond-js/dynamic-processor')();
const equal = require('@beyond-js/equal');
const crc32 = require('@beyond-js/crc32');

/**
 * Hash of a collection of sources. It is used by files and overwrites
 */
module.exports = class extends DynamicProcessor {
	get dp() {
		return 'processor.sources.hash';
	}

	constructor(sources) {
		super();
		super.setup(new Map([['sources', { child: sources }]]));
	}

	#value;
	get value() {
		return this.#value;
	}

	_prepared(require) {
		const sources = this.children.get('sources').child;
		sources.forEach(source => require(source));
	}

	_process() {
		const done = value => {
			const changed = this.#value !== value;
			this.#value = value;
			return changed;
		};

		const sources = this.children.get('sources').child;
		if (!sources.size) return done(0);

		const compute = {};
		sources.forEach(source => (compute[source.relative.file] = source.hash));
		return done(crc32(equal.generate(compute)));
	}
};