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tsconfig.ts
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81 lines (71 loc) · 2.84 KB
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import * as path from "path";
import * as ts from "typescript";
import { CompilerOptions } from "../CompilerOptions";
import { normalizeSlashes } from "../utils";
import * as cliDiagnostics from "./diagnostics";
import { ParsedCommandLine, updateParsedConfigFile } from "./parse";
export function locateConfigFile(commandLine: ParsedCommandLine): ts.Diagnostic | string | undefined {
const { project } = commandLine.options;
if (!project) {
if (commandLine.fileNames.length > 0) {
return undefined;
}
const searchPath = normalizeSlashes(process.cwd());
return ts.findConfigFile(searchPath, ts.sys.fileExists);
}
if (commandLine.fileNames.length !== 0) {
return cliDiagnostics.optionProjectCannotBeMixedWithSourceFilesOnACommandLine();
}
// TODO: Unlike tsc, this resolves `.` to absolute path
const fileOrDirectory = normalizeSlashes(path.resolve(process.cwd(), project));
if (ts.sys.directoryExists(fileOrDirectory)) {
const configFileName = path.posix.join(fileOrDirectory, "tsconfig.json");
if (ts.sys.fileExists(configFileName)) {
return configFileName;
} else {
return cliDiagnostics.cannotFindATsconfigJsonAtTheSpecifiedDirectory(project);
}
} else if (ts.sys.fileExists(fileOrDirectory)) {
return fileOrDirectory;
} else {
return cliDiagnostics.theSpecifiedPathDoesNotExist(project);
}
}
export function parseConfigFileWithSystem(
configFileName: string,
commandLineOptions?: CompilerOptions,
system = ts.sys
): ParsedCommandLine {
const parsedConfigFile = ts.parseJsonSourceFileConfigFileContent(
ts.readJsonConfigFile(configFileName, system.readFile),
system,
path.dirname(configFileName),
commandLineOptions,
configFileName
);
return updateParsedConfigFile(parsedConfigFile);
}
export function createConfigFileUpdater(
optionsToExtend: CompilerOptions
): (options: ts.CompilerOptions) => ts.Diagnostic[] {
const configFileMap = new WeakMap<ts.TsConfigSourceFile, ts.ParsedCommandLine>();
return options => {
const { configFile, configFilePath } = options;
if (!configFile || !configFilePath) return [];
if (!configFileMap.has(configFile)) {
const parsedConfigFile = updateParsedConfigFile(
ts.parseJsonSourceFileConfigFileContent(
configFile,
ts.sys,
path.dirname(configFilePath),
optionsToExtend,
configFilePath
)
);
configFileMap.set(configFile, parsedConfigFile);
}
const parsedConfigFile = configFileMap.get(configFile)!;
Object.assign(options, parsedConfigFile.options);
return parsedConfigFile.errors;
};
}