[@types/react] - Compile errors on TypeScript 3.8.x

[robrez]

More of an FYI, feel free to close immediately. Mostly here for others who may have the same issue -

I have a repo w/ some technical debt that still uses typescript @^3.x.x... since b121e7c, this repo (which has a transitive dependency on @types/react no longer compiles

../../../node_modules/@types/react/ts5.0/index.d.ts(3229,50): error TS1110: Type expected.
../../../node_modules/@types/react/ts5.0/index.d.ts(3230,51): error TS1110: Type expected.
../../../node_modules/@types/react/ts5.0/index.d.ts(3231,48): error TS1110: Type expected.
../../../node_modules/@types/react/ts5.0/index.d.ts(3231,91): error TS1005: '(' expected.
../../../node_modules/@types/react/ts5.0/index.d.ts(3232,28): error TS1110: Type expected.
../../../node_modules/@types/react/ts5.0/index.d.ts(3235,11): error TS1110: Type expected.
../../../node_modules/@types/react/ts5.0/index.d.ts(3235,50): error TS1005: '(' expected.
../../../node_modules/@types/react/ts5.0/index.d.ts(3237,10): error TS1005: '(' expected.
../../../node_modules/@types/react/ts5.0/index.d.ts(3237,74): error TS1005: '(' expected.

Remedial action

// package.json
{
  "devDependencies": {
     "@types/react": "^18.0.0 <=18.2.56",
     "@types/scheduler": "^0.16.8",
  }
}

Note that @types/scheduler was required but not present for some amount of time see PR#69178

Edit On my particular repo (the one w/ the tech debt I mentioned) - I determined (based on its dependents) - that I could upgrade to typescript@~4.8.0 without causing problems elsewhere. Doing so also remedies the problem noted above

[typescript-bot]

Thanks for the discussion about "react", some useful links for everyone:

• npm
• DT
• Related discussions

Pinging the DT module owners: @johnnyreilly, @bbenezech, @pzavolinsky, @ericanderson, @DovydasNavickas, @theruther4d, @guilhermehubner, @ferdaber, @jrakotoharisoa, @pascaloliv, @Hotell, @franklixuefei, @Jessidhia, @saranshkataria, @lukyth, @eps1lon, @zieka, @dancerphil, @dimitropoulos, @disjukr, @vhfmag, @hellatan, @priyanshurav, @Semigradsky, @mattpocock.

[eps1lon]

TypeScript 3.8 is not supported by any @types/* package. The lowest, currently supported TypeScript version is 4.7. See https://github.com/definitelyTyped/DefinitelyTyped/#support-window for more information.

[robrez]

Thanks, Sebastian. That's another thing I can point to: "You really need to upgrade your dep graph".