How to use guardTSConfigFileExists method in stryker-parent

Best JavaScript code snippet using stryker-parent

typescript-checker.ts

Source:typescript-checker.ts

...49   * Starts the typescript compiler and does a dry run50   */51  public async init(): Promise<void> {52    guardTSVersion();53    this.guardTSConfigFileExists();54    this.currentTask = new Task();55    const buildModeEnabled = determineBuildModeEnabled(this.tsconfigFile);56    const compiler = ts.createSolutionBuilderWithWatch(57      ts.createSolutionBuilderWithWatchHost(58        {59          ...ts.sys,60          readFile: (fileName) => {61            const content = this.fs.getFile(fileName)?.content;62            if (content && this.allTSConfigFiles.has(path.resolve(fileName))) {63              return this.adjustTSConfigFile(fileName, content, buildModeEnabled);64            }65            return content;66          },67          watchFile: (filePath: string, callback: ts.FileWatcherCallback) => {68            this.fs.watchFile(filePath, callback);69            return {70              close: () => {71                delete this.fs.getFile(filePath)!.watcher;72              },73            };74          },75          writeFile: (filePath, data) => {76            this.fs.writeFile(filePath, data);77          },78          createDirectory: () => {79            // Idle, no need to create directories in the hybrid fs80          },81          clearScreen() {82            // idle, never clear the screen83          },84          getModifiedTime: (fileName) => {85            return this.fs.getFile(fileName)!.modifiedTime;86          },87          watchDirectory: (): ts.FileWatcher => {88            // this is used to see if new files are added to a directory. Can safely be ignored for mutation testing.89            return {90              // eslint-disable-next-line @typescript-eslint/no-empty-function91              close() {},92            };93          },94        },95        undefined,96        (error) => this.currentErrors.push(error),97        (status) => this.logDiagnostic('status')(status),98        (summary) => {99          this.logDiagnostic('summary')(summary);100          summary.code !== FILE_CHANGE_DETECTED_DIAGNOSTIC_CODE && this.resolveCheckResult();101        }102      ),103      [this.tsconfigFile],104      {}105    );106    compiler.build();107    const result = await this.currentTask.promise;108    if (result.status === CheckStatus.CompileError) {109      throw new Error(`TypeScript error(s) found in dry run compilation: ${result.reason}`);110    }111  }112  private guardTSConfigFileExists() {113    if (!ts.sys.fileExists(this.tsconfigFile)) {114      throw new Error(115        `The tsconfig file does not exist at: "${path.resolve(116          this.tsconfigFile117        )}". Please configure the tsconfig file in your stryker.conf file using "${propertyPath<StrykerOptions>('tsconfigFile')}"`118      );119    }120  }121  /**122   * Checks whether or not a mutant results in a compile error.123   * Will simply pass through if the file mutated isn't part of the typescript project124   * @param mutant The mutant to check125   */126  public async check(mutant: Mutant): Promise<CheckResult> {...

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