Example inline-plugin to replace CopyWebpackPlugin

WebpackConfig.js

[...]

let fs = require("fs-extra");
 
webpackConfig.plugins.push({
	apply(compiler) {
		console.log(`Valid hook names: ${Object.keys(compiler.hooks)}`);
		//compiler.hooks.beforeRun.tap("CopyPlugin_Custom", params=>{
		compiler.hooks.shouldEmit.tap("CopyPlugin_Custom", params=>{
			console.log(`Copying some difficult files (eg. *.wasm) from "node_modules/..." to "Resources/FromNodeModules/...".`);

			async function CopyFile(source, dest) {
				const source_final = path.resolve(source);
				const dest_final = path.resolve(dest);

				const sourceStat = await fs.stat(source_final);
				const destStat = fs.existsSync(dest_final) ? await fs.stat(dest_final) : null;
				/*let destStat;
				try {
					destStat = await fs.stat(dest_final);
				} catch (err) {} // if path does not exist*/
				//console.log(`Source stat: ${JSON.stringify(sourceStat)} Dest stat: ${JSON.stringify(destStat)}`);

				const sourceModDateVSDest = sourceStat && destStat ? sourceStat.mtime - destStat.mtime : null;
				//if (destStat == undefined || Math.abs(sourceModDateVSDest) > 1000 || sourceStat.size != destStat.size) {
				if (destStat == undefined || sourceModDateVSDest != 0 || sourceStat.size != destStat.size) {
					// Ensure parent directory exists.
					await fs.mkdirp(`${dest_final}/..`);

					console.log(`Copying from "${source_final}" to "${dest_final}".`);
					await fs.copyFile(source_final, dest_final);

					// Set mtime to be equal to the source file.
					await fs.utimes(dest_final, new Date(), sourceStat.mtime);
				}
			}
			//CopyFile("node_modules/opus-media-recorder/encoderWorker.umd.js", "Resources/FromNodeModules/encoderWorker.umd.js");
			CopyFile("node_modules/opus-media-recorder/OggOpusEncoder.wasm", "Resources/FromNodeModules/OggOpusEncoder.wasm");
			CopyFile("node_modules/opus-media-recorder/WebMOpusEncoder.wasm", "Resources/FromNodeModules/WebMOpusEncoder.wasm");
		});
	},
});