Transcript build failed.

[gordonlau]

gordon@gordon-Lenovo-G460:~/Codes/students/Alexandra-Axenti$ gulp build
[14:46:48] Using gulpfile ~/Codes/students/Alexandra-Axenti/gulpfile.js
[14:46:48] Starting 'tsClean'...
[14:46:48] Finished 'tsClean' after 41 ms
[14:46:48] Starting 'ts'...
app/timing.pipe.ts(14,27): error TS2346: Supplied parameters do not match any signature of call target.
app/timing.pipe.ts(21,27): error TS2346: Supplied parameters do not match any signature of call target.
[14:46:52] 'ts' errored after 4.09 s
[14:46:52] Error: Command `tsc` failed with exit code 2
    at ChildProcess.exithandler (child_process.js:211:12)
    at emitTwo (events.js:106:13)
    at ChildProcess.emit (events.js:192:7)
    at maybeClose (internal/child_process.js:890:16)
    at Process.ChildProcess._handle.onexit (internal/child_process.js:226:5)

Date.new accept no parameter. Please refer to the document of MDN,