Parcel 2 (latest nightly) generates a .map file with --no-source-maps.

[utkarshkukreti]

🐛 bug report

Parcel 2 (latest nightly) generates a .map file with --no-source-maps.

To reproduce:

$ yarn parcel --version
2.0.0-nightly.180+a1a2515f

$ cat a.js
console.log(1 + 2);

$ rm -rf dist && yarn parcel build a.js && cat dist/a.js.map
dist/a.js    46 B     10ms
└── a.js     20 B    655ms

{"mappings":"AAAAA,QAAQC,IAAI","sources":["a.js"],"names":["console","log"],"version":3,"file":"a.js.map","sourcesContent":["console.log(1 + 2);\n"]}                                                                                          

$ rm -rf dist && y parcel build --no-source-maps a.js && cat dist/a.js.map
dist/a.js    46 B      2ms
└── a.js     20 B    655ms

{"mappings":"AACAA,QAAQC,IAAI","sources":["0"],"names":["console","log"],"version":3,"file":"a.js.map","sourcesContent":[null]}

With --no-source-maps, dist/a.js.map is still generated (it doesn't have sourcesContent though).

🤔 Expected Behavior

.map file should not be generated.

😯 Current Behavior

.map file is generated.

🌍 Your Environment

Software	Version(s)
Parcel	2.0.0-nightly.180+a1a2515f
Node	v13.11.0
npm/Yarn	yarn 1.22.4
Operating System	macOS 10.15.3

[DeMoorJasper]

Will look into this and create a fix later today

[utkarshkukreti]

@DeMoorJasper thanks, the new nightly works!

[steelcracker]

Hmm.. [email protected] - ok with parcel build.
But still generates a 1kb js.map with parcel watch