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Add Array.prototype.findLast() and Array.prototype.findLastIndex() #49636

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Jan 13, 2023
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Add Array.prototype.findLast() and Array.prototype.findLastIndex() #49636

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044822b
Add .findLast() and .findLastIndex() (#69)
m-basov Jun 22, 2022
175c012
Remove this: void
m-basov Dec 16, 2022
a4b18fa
Fix array brackets
m-basov Jan 13, 2023
9bf9ee1
Fix baselines after rebase and Uint8ClampedArray fix
m-basov Jan 13, 2023
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4 changes: 3 additions & 1 deletion src/compiler/commandLineParser.ts
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Expand Up @@ -156,6 +156,7 @@ const libEntries: [string, string][] = [
["es2020", "lib.es2020.d.ts"],
["es2021", "lib.es2021.d.ts"],
["es2022", "lib.es2022.d.ts"],
["es2023", "lib.es2023.d.ts"],
["esnext", "lib.esnext.d.ts"],
// Host only
["dom", "lib.dom.d.ts"],
Expand Down Expand Up @@ -209,7 +210,8 @@ const libEntries: [string, string][] = [
["es2022.sharedmemory", "lib.es2022.sharedmemory.d.ts"],
["es2022.string", "lib.es2022.string.d.ts"],
["es2022.regexp", "lib.es2022.regexp.d.ts"],
["esnext.array", "lib.es2022.array.d.ts"],
["es2023.array", "lib.es2023.array.d.ts"],
["esnext.array", "lib.es2023.array.d.ts"],
["esnext.symbol", "lib.es2019.symbol.d.ts"],
["esnext.asynciterable", "lib.es2018.asynciterable.d.ts"],
["esnext.intl", "lib.esnext.intl.d.ts"],
Expand Down
324 changes: 324 additions & 0 deletions src/lib/es2023.array.d.ts
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2 changes: 2 additions & 0 deletions src/lib/es2023.d.ts
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@@ -0,0 +1,2 @@
/// <reference lib="es2022" />
/// <reference lib="es2023.array" />
5 changes: 5 additions & 0 deletions src/lib/es2023.full.d.ts
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@@ -0,0 +1,5 @@
/// <reference lib="es2023" />
/// <reference lib="dom" />
/// <reference lib="webworker.importscripts" />
/// <reference lib="scripthost" />
/// <reference lib="dom.iterable" />
2 changes: 1 addition & 1 deletion src/lib/esnext.d.ts
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@@ -1,2 +1,2 @@
/// <reference lib="es2022" />
/// <reference lib="es2023" />
/// <reference lib="esnext.intl" />
3 changes: 3 additions & 0 deletions src/lib/libs.json
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Expand Up @@ -10,6 +10,7 @@
"es2020",
"es2021",
"es2022",
"es2023",
"esnext",
// Host only
"dom.generated",
Expand Down Expand Up @@ -63,6 +64,7 @@
"es2022.sharedmemory",
"es2022.string",
"es2022.regexp",
"es2023.array",
"esnext.intl",
// Default libraries
"es5.full",
Expand All @@ -74,6 +76,7 @@
"es2020.full",
"es2021.full",
"es2022.full",
"es2023.full",
"esnext.full"
],
"paths": {
Expand Down
4 changes: 2 additions & 2 deletions tests/baselines/reference/callWithSpread4.symbols
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Expand Up @@ -30,7 +30,7 @@ declare const pli: {

(streams: ReadonlyArray<R | W | RW>): Promise<void>;
>streams : Symbol(streams, Decl(callWithSpread4.ts, 5, 5))
>ReadonlyArray : Symbol(ReadonlyArray, Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.core.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.es2016.array.include.d.ts, --, --), Decl(lib.es2019.array.d.ts, --, --) ... and 1 more)
>ReadonlyArray : Symbol(ReadonlyArray, Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.core.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.es2016.array.include.d.ts, --, --), Decl(lib.es2019.array.d.ts, --, --) ... and 2 more)
>R : Symbol(R, Decl(callWithSpread4.ts, 0, 0))
>W : Symbol(W, Decl(callWithSpread4.ts, 0, 22))
>RW : Symbol(RW, Decl(callWithSpread4.ts, 1, 22))
Expand All @@ -43,7 +43,7 @@ declare const pli: {
>RW : Symbol(RW, Decl(callWithSpread4.ts, 1, 22))
>W : Symbol(W, Decl(callWithSpread4.ts, 0, 22))
>streams : Symbol(streams, Decl(callWithSpread4.ts, 6, 23))
>Array : Symbol(Array, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.core.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --) ... and 3 more)
>Array : Symbol(Array, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.core.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --) ... and 4 more)
>RW : Symbol(RW, Decl(callWithSpread4.ts, 1, 22))
>W : Symbol(W, Decl(callWithSpread4.ts, 0, 22))
>Promise : Symbol(Promise, Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.es2015.promise.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --), Decl(lib.es2018.promise.d.ts, --, --))
Expand Down
2 changes: 1 addition & 1 deletion ...ference/config/commandLineParsing/parseCommandLine/Parse --lib option with extra comma.js
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Expand Up @@ -10,4 +10,4 @@ WatchOptions::
FileNames::
es7,0.ts
Errors::
error TS6046: Argument for '--lib' option must be: 'es5', 'es6', 'es2015', 'es7', 'es2016', 'es2017', 'es2018', 'es2019', 'es2020', 'es2021', 'es2022', 'esnext', 'dom', 'dom.iterable', 'webworker', 'webworker.importscripts', 'webworker.iterable', 'scripthost', 'es2015.core', 'es2015.collection', 'es2015.generator', 'es2015.iterable', 'es2015.promise', 'es2015.proxy', 'es2015.reflect', 'es2015.symbol', 'es2015.symbol.wellknown', 'es2016.array.include', 'es2017.object', 'es2017.sharedmemory', 'es2017.string', 'es2017.intl', 'es2017.typedarrays', 'es2018.asyncgenerator', 'es2018.asynciterable', 'es2018.intl', 'es2018.promise', 'es2018.regexp', 'es2019.array', 'es2019.object', 'es2019.string', 'es2019.symbol', 'es2019.intl', 'es2020.bigint', 'es2020.date', 'es2020.promise', 'es2020.sharedmemory', 'es2020.string', 'es2020.symbol.wellknown', 'es2020.intl', 'es2020.number', 'es2021.promise', 'es2021.string', 'es2021.weakref', 'es2021.intl', 'es2022.array', 'es2022.error', 'es2022.intl', 'es2022.object', 'es2022.sharedmemory', 'es2022.string', 'es2022.regexp', 'esnext.array', 'esnext.symbol', 'esnext.asynciterable', 'esnext.intl', 'esnext.bigint', 'esnext.string', 'esnext.promise', 'esnext.weakref'.
error TS6046: Argument for '--lib' option must be: 'es5', 'es6', 'es2015', 'es7', 'es2016', 'es2017', 'es2018', 'es2019', 'es2020', 'es2021', 'es2022', 'es2023', 'esnext', 'dom', 'dom.iterable', 'webworker', 'webworker.importscripts', 'webworker.iterable', 'scripthost', 'es2015.core', 'es2015.collection', 'es2015.generator', 'es2015.iterable', 'es2015.promise', 'es2015.proxy', 'es2015.reflect', 'es2015.symbol', 'es2015.symbol.wellknown', 'es2016.array.include', 'es2017.object', 'es2017.sharedmemory', 'es2017.string', 'es2017.intl', 'es2017.typedarrays', 'es2018.asyncgenerator', 'es2018.asynciterable', 'es2018.intl', 'es2018.promise', 'es2018.regexp', 'es2019.array', 'es2019.object', 'es2019.string', 'es2019.symbol', 'es2019.intl', 'es2020.bigint', 'es2020.date', 'es2020.promise', 'es2020.sharedmemory', 'es2020.string', 'es2020.symbol.wellknown', 'es2020.intl', 'es2020.number', 'es2021.promise', 'es2021.string', 'es2021.weakref', 'es2021.intl', 'es2022.array', 'es2022.error', 'es2022.intl', 'es2022.object', 'es2022.sharedmemory', 'es2022.string', 'es2022.regexp', 'es2023.array', 'esnext.array', 'esnext.symbol', 'esnext.asynciterable', 'esnext.intl', 'esnext.bigint', 'esnext.string', 'esnext.promise', 'esnext.weakref'.
2 changes: 1 addition & 1 deletion ...onfig/commandLineParsing/parseCommandLine/Parse --lib option with trailing white-space.js
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Expand Up @@ -10,4 +10,4 @@ WatchOptions::
FileNames::
es7,0.ts
Errors::
error TS6046: Argument for '--lib' option must be: 'es5', 'es6', 'es2015', 'es7', 'es2016', 'es2017', 'es2018', 'es2019', 'es2020', 'es2021', 'es2022', 'esnext', 'dom', 'dom.iterable', 'webworker', 'webworker.importscripts', 'webworker.iterable', 'scripthost', 'es2015.core', 'es2015.collection', 'es2015.generator', 'es2015.iterable', 'es2015.promise', 'es2015.proxy', 'es2015.reflect', 'es2015.symbol', 'es2015.symbol.wellknown', 'es2016.array.include', 'es2017.object', 'es2017.sharedmemory', 'es2017.string', 'es2017.intl', 'es2017.typedarrays', 'es2018.asyncgenerator', 'es2018.asynciterable', 'es2018.intl', 'es2018.promise', 'es2018.regexp', 'es2019.array', 'es2019.object', 'es2019.string', 'es2019.symbol', 'es2019.intl', 'es2020.bigint', 'es2020.date', 'es2020.promise', 'es2020.sharedmemory', 'es2020.string', 'es2020.symbol.wellknown', 'es2020.intl', 'es2020.number', 'es2021.promise', 'es2021.string', 'es2021.weakref', 'es2021.intl', 'es2022.array', 'es2022.error', 'es2022.intl', 'es2022.object', 'es2022.sharedmemory', 'es2022.string', 'es2022.regexp', 'esnext.array', 'esnext.symbol', 'esnext.asynciterable', 'esnext.intl', 'esnext.bigint', 'esnext.string', 'esnext.promise', 'esnext.weakref'.
error TS6046: Argument for '--lib' option must be: 'es5', 'es6', 'es2015', 'es7', 'es2016', 'es2017', 'es2018', 'es2019', 'es2020', 'es2021', 'es2022', 'es2023', 'esnext', 'dom', 'dom.iterable', 'webworker', 'webworker.importscripts', 'webworker.iterable', 'scripthost', 'es2015.core', 'es2015.collection', 'es2015.generator', 'es2015.iterable', 'es2015.promise', 'es2015.proxy', 'es2015.reflect', 'es2015.symbol', 'es2015.symbol.wellknown', 'es2016.array.include', 'es2017.object', 'es2017.sharedmemory', 'es2017.string', 'es2017.intl', 'es2017.typedarrays', 'es2018.asyncgenerator', 'es2018.asynciterable', 'es2018.intl', 'es2018.promise', 'es2018.regexp', 'es2019.array', 'es2019.object', 'es2019.string', 'es2019.symbol', 'es2019.intl', 'es2020.bigint', 'es2020.date', 'es2020.promise', 'es2020.sharedmemory', 'es2020.string', 'es2020.symbol.wellknown', 'es2020.intl', 'es2020.number', 'es2021.promise', 'es2021.string', 'es2021.weakref', 'es2021.intl', 'es2022.array', 'es2022.error', 'es2022.intl', 'es2022.object', 'es2022.sharedmemory', 'es2022.string', 'es2022.regexp', 'es2023.array', 'esnext.array', 'esnext.symbol', 'esnext.asynciterable', 'esnext.intl', 'esnext.bigint', 'esnext.string', 'esnext.promise', 'esnext.weakref'.
2 changes: 1 addition & 1 deletion ...rence/config/commandLineParsing/parseCommandLine/Parse invalid option of library flags.js
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Expand Up @@ -10,4 +10,4 @@ WatchOptions::
FileNames::
0.ts
Errors::
error TS6046: Argument for '--lib' option must be: 'es5', 'es6', 'es2015', 'es7', 'es2016', 'es2017', 'es2018', 'es2019', 'es2020', 'es2021', 'es2022', 'esnext', 'dom', 'dom.iterable', 'webworker', 'webworker.importscripts', 'webworker.iterable', 'scripthost', 'es2015.core', 'es2015.collection', 'es2015.generator', 'es2015.iterable', 'es2015.promise', 'es2015.proxy', 'es2015.reflect', 'es2015.symbol', 'es2015.symbol.wellknown', 'es2016.array.include', 'es2017.object', 'es2017.sharedmemory', 'es2017.string', 'es2017.intl', 'es2017.typedarrays', 'es2018.asyncgenerator', 'es2018.asynciterable', 'es2018.intl', 'es2018.promise', 'es2018.regexp', 'es2019.array', 'es2019.object', 'es2019.string', 'es2019.symbol', 'es2019.intl', 'es2020.bigint', 'es2020.date', 'es2020.promise', 'es2020.sharedmemory', 'es2020.string', 'es2020.symbol.wellknown', 'es2020.intl', 'es2020.number', 'es2021.promise', 'es2021.string', 'es2021.weakref', 'es2021.intl', 'es2022.array', 'es2022.error', 'es2022.intl', 'es2022.object', 'es2022.sharedmemory', 'es2022.string', 'es2022.regexp', 'esnext.array', 'esnext.symbol', 'esnext.asynciterable', 'esnext.intl', 'esnext.bigint', 'esnext.string', 'esnext.promise', 'esnext.weakref'.
error TS6046: Argument for '--lib' option must be: 'es5', 'es6', 'es2015', 'es7', 'es2016', 'es2017', 'es2018', 'es2019', 'es2020', 'es2021', 'es2022', 'es2023', 'esnext', 'dom', 'dom.iterable', 'webworker', 'webworker.importscripts', 'webworker.iterable', 'scripthost', 'es2015.core', 'es2015.collection', 'es2015.generator', 'es2015.iterable', 'es2015.promise', 'es2015.proxy', 'es2015.reflect', 'es2015.symbol', 'es2015.symbol.wellknown', 'es2016.array.include', 'es2017.object', 'es2017.sharedmemory', 'es2017.string', 'es2017.intl', 'es2017.typedarrays', 'es2018.asyncgenerator', 'es2018.asynciterable', 'es2018.intl', 'es2018.promise', 'es2018.regexp', 'es2019.array', 'es2019.object', 'es2019.string', 'es2019.symbol', 'es2019.intl', 'es2020.bigint', 'es2020.date', 'es2020.promise', 'es2020.sharedmemory', 'es2020.string', 'es2020.symbol.wellknown', 'es2020.intl', 'es2020.number', 'es2021.promise', 'es2021.string', 'es2021.weakref', 'es2021.intl', 'es2022.array', 'es2022.error', 'es2022.intl', 'es2022.object', 'es2022.sharedmemory', 'es2022.string', 'es2022.regexp', 'es2023.array', 'esnext.array', 'esnext.symbol', 'esnext.asynciterable', 'esnext.intl', 'esnext.bigint', 'esnext.string', 'esnext.promise', 'esnext.weakref'.
4 changes: 2 additions & 2 deletions tests/baselines/reference/dependentDestructuredVariables.symbols
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Expand Up @@ -378,7 +378,7 @@ interface B<T> { variant: 'b', value: Array<T> }
>T : Symbol(T, Decl(dependentDestructuredVariables.ts, 148, 12))
>variant : Symbol(B.variant, Decl(dependentDestructuredVariables.ts, 148, 16))
>value : Symbol(B.value, Decl(dependentDestructuredVariables.ts, 148, 30))
>Array : Symbol(Array, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.core.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --) ... and 3 more)
>Array : Symbol(Array, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.core.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --) ... and 4 more)
>T : Symbol(T, Decl(dependentDestructuredVariables.ts, 148, 12))

type AB<T> = A<T> | B<T>;
Expand All @@ -399,7 +399,7 @@ declare function printValueList<T>(t: Array<T>): void;
>printValueList : Symbol(printValueList, Decl(dependentDestructuredVariables.ts, 152, 43))
>T : Symbol(T, Decl(dependentDestructuredVariables.ts, 154, 32))
>t : Symbol(t, Decl(dependentDestructuredVariables.ts, 154, 35))
>Array : Symbol(Array, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.core.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --) ... and 3 more)
>Array : Symbol(Array, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.core.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --) ... and 4 more)
>T : Symbol(T, Decl(dependentDestructuredVariables.ts, 154, 32))

function unrefined1<T>(ab: AB<T>): void {
Expand Down
57 changes: 57 additions & 0 deletions tests/baselines/reference/findLast.js
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@@ -0,0 +1,57 @@
//// [findLast.ts]
const itemNumber: number | undefined = [0].findLast((item) => item === 0);
const itemString: string | undefined = ["string"].findLast((item) => item === "string");
new Int8Array().findLast((item) => item === 0);
new Uint8Array().findLast((item) => item === 0);
new Uint8ClampedArray().findLast((item) => item === 0);
new Int16Array().findLast((item) => item === 0);
new Uint16Array().findLast((item) => item === 0);
new Int32Array().findLast((item) => item === 0);
new Uint32Array().findLast((item) => item === 0);
new Float32Array().findLast((item) => item === 0);
new Float64Array().findLast((item) => item === 0);
new BigInt64Array().findLast((item) => item === BigInt(0));
new BigUint64Array().findLast((item) => item === BigInt(0));

const indexNumber: number = [0].findLastIndex((item) => item === 0);
const indexString: number = ["string"].findLastIndex((item) => item === "string");
new Int8Array().findLastIndex((item) => item === 0);
new Uint8Array().findLastIndex((item) => item === 0);
new Uint8ClampedArray().findLastIndex((item) => item === 0);
new Int16Array().findLastIndex((item) => item === 0);
new Uint16Array().findLastIndex((item) => item === 0);
new Int32Array().findLastIndex((item) => item === 0);
new Uint32Array().findLastIndex((item) => item === 0);
new Float32Array().findLastIndex((item) => item === 0);
new Float64Array().findLastIndex((item) => item === 0);
new BigInt64Array().findLastIndex((item) => item === BigInt(0));
new BigUint64Array().findLastIndex((item) => item === BigInt(0));


//// [findLast.js]
const itemNumber = [0].findLast((item) => item === 0);
const itemString = ["string"].findLast((item) => item === "string");
new Int8Array().findLast((item) => item === 0);
new Uint8Array().findLast((item) => item === 0);
new Uint8ClampedArray().findLast((item) => item === 0);
new Int16Array().findLast((item) => item === 0);
new Uint16Array().findLast((item) => item === 0);
new Int32Array().findLast((item) => item === 0);
new Uint32Array().findLast((item) => item === 0);
new Float32Array().findLast((item) => item === 0);
new Float64Array().findLast((item) => item === 0);
new BigInt64Array().findLast((item) => item === BigInt(0));
new BigUint64Array().findLast((item) => item === BigInt(0));
const indexNumber = [0].findLastIndex((item) => item === 0);
const indexString = ["string"].findLastIndex((item) => item === "string");
new Int8Array().findLastIndex((item) => item === 0);
new Uint8Array().findLastIndex((item) => item === 0);
new Uint8ClampedArray().findLastIndex((item) => item === 0);
new Int16Array().findLastIndex((item) => item === 0);
new Uint16Array().findLastIndex((item) => item === 0);
new Int32Array().findLastIndex((item) => item === 0);
new Uint32Array().findLastIndex((item) => item === 0);
new Float32Array().findLastIndex((item) => item === 0);
new Float64Array().findLastIndex((item) => item === 0);
new BigInt64Array().findLastIndex((item) => item === BigInt(0));
new BigUint64Array().findLastIndex((item) => item === BigInt(0));
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