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app_vue/node_modules/webpack/lib/ConditionalInitFragment.js

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+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+
+"use strict";
+
+const { ConcatSource, PrefixSource } = require("webpack-sources");
+const InitFragment = require("./InitFragment");
+const Template = require("./Template");
+const { mergeRuntime } = require("./util/runtime");
+
+/** @typedef {import("webpack-sources").Source} Source */
+/** @typedef {import("./Generator").GenerateContext} GenerateContext */
+/** @typedef {import("./util/runtime").RuntimeSpec} RuntimeSpec */
+
+/**
+ * @param {string} condition condition
+ * @param {string | Source} source source
+ * @returns {string | Source} wrapped source
+ */
+const wrapInCondition = (condition, source) => {
+	if (typeof source === "string") {
+		return Template.asString([
+			`if (${condition}) {`,
+			Template.indent(source),
+			"}",
+			""
+		]);
+	}
+	return new ConcatSource(
+		`if (${condition}) {\n`,
+		new PrefixSource("\t", source),
+		"}\n"
+	);
+};
+
+/**
+ * @extends {InitFragment<GenerateContext>}
+ */
+class ConditionalInitFragment extends InitFragment {
+	/**
+	 * @param {string | Source | undefined} content the source code that will be included as initialization code
+	 * @param {number} stage category of initialization code (contribute to order)
+	 * @param {number} position position in the category (contribute to order)
+	 * @param {string | undefined} key unique key to avoid emitting the same initialization code twice
+	 * @param {RuntimeSpec | boolean} runtimeCondition in which runtime this fragment should be executed
+	 * @param {string | Source=} endContent the source code that will be included at the end of the module
+	 */
+	constructor(
+		content,
+		stage,
+		position,
+		key,
+		runtimeCondition = true,
+		endContent = undefined
+	) {
+		super(content, stage, position, key, endContent);
+		this.runtimeCondition = runtimeCondition;
+	}
+
+	/**
+	 * @param {GenerateContext} context context
+	 * @returns {string | Source | undefined} the source code that will be included as initialization code
+	 */
+	getContent(context) {
+		if (this.runtimeCondition === false || !this.content) return "";
+		if (this.runtimeCondition === true) return this.content;
+		const expr = context.runtimeTemplate.runtimeConditionExpression({
+			chunkGraph: context.chunkGraph,
+			runtimeRequirements: context.runtimeRequirements,
+			runtime: context.runtime,
+			runtimeCondition: this.runtimeCondition
+		});
+		if (expr === "true") return this.content;
+		return wrapInCondition(expr, this.content);
+	}
+
+	/**
+	 * @param {GenerateContext} context context
+	 * @returns {string | Source=} the source code that will be included at the end of the module
+	 */
+	getEndContent(context) {
+		if (this.runtimeCondition === false || !this.endContent) return "";
+		if (this.runtimeCondition === true) return this.endContent;
+		const expr = context.runtimeTemplate.runtimeConditionExpression({
+			chunkGraph: context.chunkGraph,
+			runtimeRequirements: context.runtimeRequirements,
+			runtime: context.runtime,
+			runtimeCondition: this.runtimeCondition
+		});
+		if (expr === "true") return this.endContent;
+		return wrapInCondition(expr, this.endContent);
+	}
+
+	/**
+	 * @param {ConditionalInitFragment} other fragment to merge with
+	 * @returns {ConditionalInitFragment} merged fragment
+	 */
+	merge(other) {
+		if (this.runtimeCondition === true) return this;
+		if (other.runtimeCondition === true) return other;
+		if (this.runtimeCondition === false) return other;
+		if (other.runtimeCondition === false) return this;
+		const runtimeCondition = mergeRuntime(
+			this.runtimeCondition,
+			other.runtimeCondition
+		);
+		return new ConditionalInitFragment(
+			this.content,
+			this.stage,
+			this.position,
+			this.key,
+			runtimeCondition,
+			this.endContent
+		);
+	}
+}
+
+module.exports = ConditionalInitFragment;