module.buildInfo.fileDependencies is undefined in webpack 5 about webpack

[alexander-akait]

Hello, sorry for delay, yeah module.buildInfo.fileDependencies was removed in webpack 5, there is an answer how to migrate #8537 (comment), some notes were missed, apparently we forgot to add this.

Try this:

class MyPlugin {
	apply(compiler) {
		const moduleAndFileDependencies = new Map();

		compiler.hooks.compilation.tap("MyPlugin", compilation => {
			const hooks = NormalModule.getCompilationHooks(compilation);

			hooks.beforeSnapshot.tap("MyPlugin", module => {
				if (module.buildInfo.fileDependencies.size > 0) {
					moduleAndFileDependencies.set(
						module.identifier(),
						[...module.buildInfo.fileDependencies]
					);
				}
			});
		});

		compiler.hooks.emit.tapAsync('MyPlugin', (compilation, callback) => {
			compilation.chunks.forEach((chunk) => {
				compilation.chunkGraph.getChunkModules(chunk).forEach((module) => {
					if (moduleAndFileDependencies.has(module.identifier())) {
						console.log(moduleAndFileDependencies.get(module.identifier()))
					}
				});
			});

			callback();
		});
	}
}

Feel free to feedback