настройка webpack

node_modules/webpack/lib/BannerPlugin.js

@@ -0,0 +1,122 @@
+/*
+ MIT License http://www.opensource.org/licenses/mit-license.php
+ Author Tobias Koppers @sokra
+ */
+
+"use strict";
+
+const { ConcatSource } = require("webpack-sources");
+const ModuleFilenameHelpers = require("./ModuleFilenameHelpers");
+const Template = require("./Template");
+
+const validateOptions = require("schema-utils");
+const schema = require("../schemas/plugins/BannerPlugin.json");
+
+/** @typedef {import("../declarations/plugins/BannerPlugin").BannerPluginArgument} BannerPluginArgument */
+/** @typedef {import("../declarations/plugins/BannerPlugin").BannerPluginOptions} BannerPluginOptions */
+
+const wrapComment = str => {
+	if (!str.includes("\n")) {
+		return Template.toComment(str);
+	}
+	return `/*!\n * ${str
+		.replace(/\*\//g, "* /")
+		.split("\n")
+		.join("\n * ")}\n */`;
+};
+
+class BannerPlugin {
+	/**
+	 * @param {BannerPluginArgument} options options object
+	 */
+	constructor(options) {
+		if (arguments.length > 1) {
+			throw new Error(
+				"BannerPlugin only takes one argument (pass an options object)"
+			);
+		}
+
+		validateOptions(schema, options, "Banner Plugin");
+
+		if (typeof options === "string" || typeof options === "function") {
+			options = {
+				banner: options
+			};
+		}
+
+		/** @type {BannerPluginOptions} */
+		this.options = options;
+
+		const bannerOption = options.banner;
+		if (typeof bannerOption === "function") {
+			const getBanner = bannerOption;
+			this.banner = this.options.raw
+				? getBanner
+				: data => wrapComment(getBanner(data));
+		} else {
+			const banner = this.options.raw
+				? bannerOption
+				: wrapComment(bannerOption);
+			this.banner = () => banner;
+		}
+	}
+
+	apply(compiler) {
+		const options = this.options;
+		const banner = this.banner;
+		const matchObject = ModuleFilenameHelpers.matchObject.bind(
+			undefined,
+			options
+		);
+
+		compiler.hooks.compilation.tap("BannerPlugin", compilation => {
+			compilation.hooks.optimizeChunkAssets.tap("BannerPlugin", chunks => {
+				for (const chunk of chunks) {
+					if (options.entryOnly && !chunk.canBeInitial()) {
+						continue;
+					}
+
+					for (const file of chunk.files) {
+						if (!matchObject(file)) {
+							continue;
+						}
+
+						let query = "";
+						let filename = file;
+						const hash = compilation.hash;
+						const querySplit = filename.indexOf("?");
+
+						if (querySplit >= 0) {
+							query = filename.substr(querySplit);
+							filename = filename.substr(0, querySplit);
+						}
+
+						const lastSlashIndex = filename.lastIndexOf("/");
+
+						const basename =
+							lastSlashIndex === -1
+								? filename
+								: filename.substr(lastSlashIndex + 1);
+
+						const data = {
+							hash,
+							chunk,
+							filename,
+							basename,
+							query
+						};
+
+						const comment = compilation.getPath(banner(data), data);
+
+						compilation.updateAsset(
+							file,
+							old => new ConcatSource(comment, "\n", old)
+						);
+					}
+				}
+			});
+		});
+	}
+}
+
+module.exports = BannerPlugin;