Method startWithProgram

src/common.ts:807–830

(
        prog: string, args: readonly string[] = [],
        spawnOpts: childProcess.SpawnOptions = {}, cb: (line: string) => boolean = null)

    }

    public startWithProgram(
        prog: string, args: readonly string[] = [],
        spawnOpts: childProcess.SpawnOptions = {}, cb: (line: string) => boolean = null): Promise<boolean> {
        if (this.promise) { throw new Error('SpawnLineReader: can\'t reuse this object'); }
        this.callback = cb;
        this.promise = new Promise<boolean>((resolve) => {
            try {
                const child = childProcess.spawn(prog, args, spawnOpts);
                child.on('error', (err) => {
                    this.emit('error', err);
                    resolve(false);
                });
                child.on('exit', (code: number, signal: string) => {
                    this.emit('exit', code, signal);
                    // read-line will resolve. Not us
                });
                this.doReadline(child.stdout, resolve);
            }
            catch (e) {
                this.emit('error', e);
            }
        });
        return this.promise;
    }

    public startWithStream(rStream: stream.Readable, cb: (line: string) => boolean = null): Promise<boolean> {
        if (this.promise) { throw new Error('SpawnLineReader: can\'t reuse this object'); }