TypeScript will support all proposals above stage-3. But there are always some gap between TypeScript support and proposal progress. And sometimes we want to use proposals within stage-3 (e.g. `Iterator helper`) because we may use polyfill.
npm install core-dtsTypeScript will support all proposals above stage-3.
But there are always some gap between TypeScript support and proposal progress.
And sometimes we want to use proposals within stage-3 (e.g. Iterator helper) because we may use polyfill.
In this case, we have to write those declarations by our own.
But with core-dts, we can use these proposal with additional declaration files.
``
pnpm add core-dts -D
into types in compiler options.`json
{
"compilerOptions": {
"types": ["core-dts"]
}
}
`Proposals
Default proposals are above . If you want to use something like stage-2 proposal.`json
{
"compilerOptions": {
"types": ["core-dts/src/proposals/stage-2"]
}
}
`Or you want to use some specific proposal.
json
{
"compilerOptions": {
"types": ["core-dts/src/proposals/stage-2/iterator-helper.d.ts"]
}
}
`Features
- [x] Finished proposals
- [x] find from last
- [x] Stage 3 proposals
- [x] Array grouping
- [x] Change Array by copy
- [x] Stage 2 proposals
- [x] Iterator helpers
- [x] New Set methods
- [x] Map.prototype.emplace
- [x]
- [x]
- [x] for using statement
- [x] Symbol.metadataKey for decorators metadata proposal
- [x] Stage 1 proposals
- [x] Observable
- [x] New collections methods
- [x] and .from methods on collection constructors
- [x] compositeKey and compositeSymbol
- [x] filtering
- [x] Array deduplication
- [x] Getting last item from Array
- [x]
- [x]
- [x] extensions
- [x] Math.signbit
- [x]
- [x]
- [x] for pattern matching
- [x] Stage 0 proposals
- [x] Function.prototype.unThis
- [x]