Method checkSimilarFile

lib/Compiler.js:827–863

()

						let similarEntry;

						const checkSimilarFile = () => {
							const caseInsensitiveTargetPath = targetPath.toLowerCase();
							similarEntry = caseInsensitiveMap.get(caseInsensitiveTargetPath);
							if (similarEntry !== undefined) {
								const { path: other, source: otherSource } = similarEntry;
								if (isSourceEqual(otherSource, source)) {
									// Size may or may not be available at this point.
									// If it's not available add to "waiting" list and it will be updated once available
									if (similarEntry.size !== undefined) {
										updateWithReplacementSource(similarEntry.size);
									} else {
										if (!similarEntry.waiting) similarEntry.waiting = [];
										similarEntry.waiting.push({ file, cacheEntry });
									}
									alreadyWritten();
								} else {
									const err =
										new WebpackError(`Prevent writing to file that only differs in casing or query string from already written file.
This will lead to a race-condition and corrupted files on case-insensitive file systems.
${targetPath}
${other}`);
									err.file = file;
									callback(err);
								}
								return true;
							}
							caseInsensitiveMap.set(
								caseInsensitiveTargetPath,
								(similarEntry = /** @type {SimilarEntry} */ ({
									path: targetPath,
									source,
									size: undefined,
									waiting: undefined
								}))
							);
							return false;
						};

						/**
						 * get the binary (Buffer) content from the Source