Bad sourcemap paths when using gulp to build Microsoft/TypeScript

[aozgaa]

TypeScript Version: master -- commit 40327b

Tested on Ubuntu 16.04 and Win10.

From a commandline (copying the Microsft/TypeScript readme instructions):

git clone https://github.com/Microsoft/TypeScript.git
cd TypeScript
npm install -g gulp
npm install
gulp local

checking any of the *.js.map files in the built/local directory reveals that the path to the source files is truncated. From tsserver.js.map, for example, we have

Expected behavior:

Obtained by building with jake:

{"version":3,"file":"tsserver.js","sourceRoot":"","sources":["file:////home/arthur/TypeScript/src/compiler/types.ts","file:////home/arthur/TypeScript/src/compiler/performance.ts","file:////home/arthur/TypeScript/src/compiler/core.ts","file:////home/arthur/TypeScript/src/compiler/sys.ts",

...

Actual behavior:

Obtained by building with gulp:

{"version":3,"sources":["compiler/types.ts","compiler/performance.ts","compiler/core.ts","compiler/sys.ts","compiler/utilities.ts","compiler/diagnosticInformationMap.generated.ts","compiler/scanner.ts",

...

---

EDIT: clarifying sentence.

[Igorbek]

+1, I had to edit them manually in order to be able to debug.

[weswigham]

The paths are correct nowadays (ofc, gulp is our only build tool now, it had to be fixed) - sourceRoot is "" and the paths all look like ../../src/compiler/core.ts.