ts-simple-ast/dist/utils/getCompilerOptionsFromTsConfig.js

TypeScript compiler wrapper for AST navigation and code generation.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var ts = require("typescript");
var errors_1 = require("./../errors");
var fileSystem_1 = require("./../fileSystem");
var FileUtils_1 = require("./FileUtils");
/**
 * Gets the compiler options from a specified tsconfig.json
 * @param filePath - File path to the tsconfig.json.
 * @param fileSystemHost - Optional file system host.
 */
function getCompilerOptionsFromTsConfig(filePath, fileSystemHost) {
    fileSystemHost = fileSystemHost || new fileSystem_1.DefaultFileSystemHost();
    var absoluteFilePath = FileUtils_1.FileUtils.getStandardizedAbsolutePath(fileSystemHost, filePath);
    verifyFileExists(fileSystemHost, absoluteFilePath);
    var result = ts.parseConfigFileTextToJson(absoluteFilePath, fileSystemHost.readFileSync(absoluteFilePath));
    if (result.error != null)
        throw new Error(result.error.messageText.toString());
    var settings = ts.convertCompilerOptionsFromJson(result.config.compilerOptions, FileUtils_1.FileUtils.getDirPath(filePath));
    if (!settings.options)
        throw new Error(getErrorMessage(settings.errors));
    return settings.options;
}
exports.getCompilerOptionsFromTsConfig = getCompilerOptionsFromTsConfig;
function getErrorMessage(errors) {
    var message = "";
    errors.forEach(function (err) { return message += err.messageText + "\n"; });
    return message;
}
function verifyFileExists(fileSystemHost, filePath) {
    // unfortunately the ts compiler doesn't do things asynchronously so for now we won't either
    if (!fileSystemHost.fileExistsSync(filePath))
        throw new errors_1.FileNotFoundError(filePath);
}