My build fail since yesterday with an error message from preact

[borisBelloc]

hello 👋

Describe the bug

• I have an angular aplication.
• Everything worked fine before and I didn't upgrade any package.

Since yesterday (27 february), my ng build --prod fail with an error message from Preact :

Compiling ngx-cookie-service : es2015 as esm2015
Compiling @ngx-translate/http-loader : es2015 as esm2015
ERROR in node_modules/preact/src/jsx.d.ts:2138:24 - error TS2304: Cannot find name 'SVGMPathElement'.
2138      mpath: SVGAttributes<SVGMPathElement>;
                               ~~~~~~~~~~~~~~~
node_modules/preact/src/jsx.d.ts:2145:22 - error TS2304: Cannot find name 'SVGSetElement'.
2145      set: SVGAttributes<SVGSetElement>;
                             ~~~~~~~~~~~~~
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! optical-si-frontend@2.36.0 build:production: `ng build --prod`
npm ERR! Exit status 1
npm ERR! 
npm ERR! Failed at the optical-si-frontend@2.36.0 build:production script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
npm ERR! A complete log of this run can be found in:
npm ERR!     /tmp/.npm/_logs/2023-02-27T08_55_57_275Z-debug.log
Cleaning up project directory and file based variables
00:01
ERROR: Job failed: exit code 1

I found one framework using PREACT in my packagelock.json (I don't have PREACT in package.json) :

    "@fullcalendar/core": {
      "version": "5.11.4",
      "resolved": "https://registry.npmjs.org/@fullcalendar/core/-/core-5.11.4.tgz",
      "integrity": "sha512-p1/GRIageomlyJpsMVi+Ig5TNo9t2sEYsLHe6zvtCLtpXK/l03veZukYyM/jou8VzT0VJp1f7yN8irc5VBgqxw==",
      "requires": {
        "@fullcalendar/common": "~5.11.4",
        "preact": "^10.0.5",
        "tslib": "^2.1.0"
      }
    },

at the bottom of packagelock.json, I have :

    "preact": {
      "version": "10.13.0",
      "resolved": "https://registry.npmjs.org/preact/-/preact-10.13.0.tgz",
      "integrity": "sha512-ERdIdUpR6doqdaSIh80hvzebHB7O6JxycOhyzAeLEchqOq/4yueslQbfnPwXaNhAYacFTyCclhwkEbOumT0tHw=="
    },

If I change PREACT version at the bottom of the file from 10.13.0 to 10.8.2 it fix the problem.

Any idea what can I do ?

I'm not sure if I should report thig bug to PREACT or FULLCALENDAR.
Issue from fullcalendar github : fullcalendar/fullcalendar#7228

Thank you.

[IamZiaullah]

if you lock your preact version manually in package.json like "preact": "10.0.5 - 10.12.1", it solves the issue for the project which are using TypeScript v < 4.4 and @fullcalendar v5. but if you don't want to preact manually to your package.json try adding the flag "skipLibCheck": true to compilerOption object in tsconfig.json

[rschristian]

See fullcalendar/fullcalendar#7225

Preact (as of v10.13.0) is shipping TypeScript v4.4 features. This is an issue for the FullCalendar repo, as the types are correct from our side.