Use of skipLibCheck: true #787

nemzes · 2021-11-11T08:12:21Z

nemzes
Nov 11, 2021

I was wondering what is the reason for using skipLibCheck: true in tsconfig.json. Using CWC as a dependency, it forces us to also use skipLibCheck: true or our build fails.

Attempting to build CWC with skipLibCheck: false fails with this error:

[09:04:03] Finished 'build:modules:scripts-node' after 4.23 min
/projects/carbon-web-components/node_modules/@types/node/index.d.ts(200,11): error TS2300: Duplicate identifier 'IteratorResult'.
/projects/carbon-web-components/node_modules/typescript/lib/lib.es2015.iterable.d.ts(41,6): error TS2300: Duplicate identifier 'IteratorResult'.
src/typings/jsx-elements.d.ts(38,7): error TS2300: Duplicate identifier 'bx-loading'.
src/typings/jsx-elements.d.ts(45,7): error TS2300: Duplicate identifier 'bx-loading'.
src/typings/resources.d.ts(14,18): error TS2714: The expression of an export assignment must be an identifier or qualified name in an ambient context.
src/typings/resources.d.ts(17,20): error TS2708: Cannot use namespace 'JSX' as a value.
src/typings/vendor.d.ts(34,6): error TS2304: Cannot find name 'Handle'.
src/typings/vendor.d.ts(40,6): error TS2304: Cannot find name 'Handle'.
TypeScript: 8 semantic errors
TypeScript: emit succeeded (with errors)
[09:04:29] 'build:modules:types' errored after 4.67 min
[09:04:29] Error: TypeScript: Compilation failed
    at Output.mightFinish (/projects/carbon-web-components/node_modules/gulp-typescript/release/output.js:130:43)
    at /projects/carbon-web-components/node_modules/gulp-typescript/release/output.js:65:22
[09:04:29] 'build:modules' errored after 4.67 min
[09:04:29] 'build' errored after 4.67 min
[09:04:29] The following tasks did not complete: build:modules:icon-types, build:modules:icons, build:modules:react, build:modules:react-types, build:modules:scripts
[09:04:29] Did you forget to signal async completion?
error Command failed with exit code 1.