feat: initial commit

node_modules/webpack-sources/lib/OriginalSource.js

@@ -0,0 +1,135 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+"use strict";
+
+const { getMap, getSourceAndMap } = require("./helpers/getFromStreamChunks");
+const splitIntoLines = require("./helpers/splitIntoLines");
+const getGeneratedSourceInfo = require("./helpers/getGeneratedSourceInfo");
+const Source = require("./Source");
+const splitIntoPotentialTokens = require("./helpers/splitIntoPotentialTokens");
+
+class OriginalSource extends Source {
+	constructor(value, name) {
+		super();
+		const isBuffer = Buffer.isBuffer(value);
+		this._value = isBuffer ? undefined : value;
+		this._valueAsBuffer = isBuffer ? value : undefined;
+		this._name = name;
+	}
+
+	getName() {
+		return this._name;
+	}
+
+	source() {
+		if (this._value === undefined) {
+			this._value = this._valueAsBuffer.toString("utf-8");
+		}
+		return this._value;
+	}
+
+	buffer() {
+		if (this._valueAsBuffer === undefined) {
+			this._valueAsBuffer = Buffer.from(this._value, "utf-8");
+		}
+		return this._valueAsBuffer;
+	}
+
+	map(options) {
+		return getMap(this, options);
+	}
+
+	sourceAndMap(options) {
+		return getSourceAndMap(this, options);
+	}
+
+	/**
+	 * @param {object} options options
+	 * @param {function(string, number, number, number, number, number, number): void} onChunk called for each chunk of code
+	 * @param {function(number, string, string)} onSource called for each source
+	 * @param {function(number, string)} onName called for each name
+	 * @returns {void}
+	 */
+	streamChunks(options, onChunk, onSource, onName) {
+		if (this._value === undefined) {
+			this._value = this._valueAsBuffer.toString("utf-8");
+		}
+		onSource(0, this._name, this._value);
+		const finalSource = !!(options && options.finalSource);
+		if (!options || options.columns !== false) {
+			// With column info we need to read all lines and split them
+			const matches = splitIntoPotentialTokens(this._value);
+			let line = 1;
+			let column = 0;
+			if (matches !== null) {
+				for (const match of matches) {
+					const isEndOfLine = match.endsWith("\n");
+					if (isEndOfLine && match.length === 1) {
+						if (!finalSource) onChunk(match, line, column, -1, -1, -1, -1);
+					} else {
+						const chunk = finalSource ? undefined : match;
+						onChunk(chunk, line, column, 0, line, column, -1);
+					}
+					if (isEndOfLine) {
+						line++;
+						column = 0;
+					} else {
+						column += match.length;
+					}
+				}
+			}
+			return {
+				generatedLine: line,
+				generatedColumn: column,
+				source: finalSource ? this._value : undefined
+			};
+		} else if (finalSource) {
+			// Without column info and with final source we only
+			// need meta info to generate mapping
+			const result = getGeneratedSourceInfo(this._value);
+			const { generatedLine, generatedColumn } = result;
+			if (generatedColumn === 0) {
+				for (let line = 1; line < generatedLine; line++)
+					onChunk(undefined, line, 0, 0, line, 0, -1);
+			} else {
+				for (let line = 1; line <= generatedLine; line++)
+					onChunk(undefined, line, 0, 0, line, 0, -1);
+			}
+			return result;
+		} else {
+			// Without column info, but also without final source
+			// we need to split source by lines
+			let line = 1;
+			const matches = splitIntoLines(this._value);
+			let match;
+			for (match of matches) {
+				onChunk(finalSource ? undefined : match, line, 0, 0, line, 0, -1);
+				line++;
+			}
+			return matches.length === 0 || match.endsWith("\n")
+				? {
+						generatedLine: matches.length + 1,
+						generatedColumn: 0,
+						source: finalSource ? this._value : undefined
+				  }
+				: {
+						generatedLine: matches.length,
+						generatedColumn: match.length,
+						source: finalSource ? this._value : undefined
+				  };
+		}
+	}
+
+	updateHash(hash) {
+		if (this._valueAsBuffer === undefined) {
+			this._valueAsBuffer = Buffer.from(this._value, "utf-8");
+		}
+		hash.update("OriginalSource");
+		hash.update(this._valueAsBuffer);
+		hash.update(this._name || "");
+	}
+}
+
+module.exports = OriginalSource;