typescript-transform-paths/dist/utils/ts-helpers.js

Transforms module resolution paths using TypeScript path mapping and/or custom paths

import path from "node:path";
/* ****************************************************************************************************************** */
// region: TS Helpers
/* ****************************************************************************************************************** */
/** Determine output file path for source file */
export function getOutputDirForSourceFile(context, sourceFile) {
    const { tsInstance, emitHost, outputFileNamesCache, compilerOptions, tsInstance: { getOwnEmitOutputFilePath, getOutputExtension }, } = context;
    if (outputFileNamesCache.has(sourceFile))
        return outputFileNamesCache.get(sourceFile);
    // Note: In project references, resolved path is different from path. In that case, our output path is already
    // determined in resolvedPath
    const outputPath = sourceFile.path && sourceFile.resolvedPath && sourceFile.path !== sourceFile.resolvedPath
        ? sourceFile.resolvedPath
        : getOwnEmitOutputFilePath(sourceFile.fileName, emitHost, getOutputExtension(sourceFile.fileName, compilerOptions));
    if (!outputPath)
        throw new Error(`Could not resolve output path for ${sourceFile.fileName}. Please report a GH issue at: ` +
            `https://github.com/LeDDGroup/typescript-transform-paths/issues`);
    const res = path.dirname(outputPath);
    outputFileNamesCache.set(sourceFile, res);
    return tsInstance.normalizePath(res);
}
/** Determine if moduleName matches config in paths */
export function isModulePathsMatch(context, moduleName) {
    const { pathsPatterns, tsInstance: { matchPatternOrExact }, } = context;
    return !!(pathsPatterns && matchPatternOrExact(pathsPatterns, moduleName));
}
/** Create barebones EmitHost (for no-Program transform) */
export function createSyntheticEmitHost(compilerOptions, tsInstance, getCanonicalFileName, fileNames) {
    return {
        getCompilerOptions: () => compilerOptions,
        getCurrentDirectory: tsInstance.sys.getCurrentDirectory,
        getCommonSourceDirectory: () => tsInstance.getCommonSourceDirectoryOfConfig({ options: compilerOptions, fileNames: fileNames }, !tsInstance.sys.useCaseSensitiveFileNames),
        getCanonicalFileName,
    };
}
// endregion
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