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Add heuristic for extracting irreducible null and undefined types from intersections of unions (#33150)
This commit is contained in:
Wesley Wigham
GitHub
parent
c26c44d5fc
commit
a93298665c
@ -9996,6 +9996,16 @@ namespace ts {
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return true;
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}
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function extractIrreducible(types: Type[], flag: TypeFlags) {
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if (every(types, t => !!(t.flags & TypeFlags.Union) && some((t as UnionType).types, tt => !!(tt.flags & flag)))) {
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for (let i = 0; i < types.length; i++) {
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types[i] = filterType(types[i], t => !(t.flags & flag));
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}
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return true;
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}
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return false;
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}
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// If the given list of types contains more than one union of primitive types, replace the
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// first with a union containing an intersection of those primitive types, then remove the
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// other unions and return true. Otherwise, do nothing and return false.
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@ -10114,6 +10124,12 @@ namespace ts {
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// reduced we'll never reduce again, so this occurs at most once.
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result = getIntersectionType(typeSet, aliasSymbol, aliasTypeArguments);
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}
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else if (extractIrreducible(typeSet, TypeFlags.Undefined)) {
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result = getUnionType([getIntersectionType(typeSet), undefinedType], UnionReduction.Literal, aliasSymbol, aliasTypeArguments);
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}
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else if (extractIrreducible(typeSet, TypeFlags.Null)) {
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result = getUnionType([getIntersectionType(typeSet), nullType], UnionReduction.Literal, aliasSymbol, aliasTypeArguments);
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}
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else {
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// We are attempting to construct a type of the form X & (A | B) & Y. Transform this into a type of
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// the form X & A & Y | X & B & Y and recursively reduce until no union type constituents remain.
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@ -0,0 +1,85 @@
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//// [partialOfLargeAPIIsAbleToBeWorkedWith.ts]
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interface MyAPI {
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0: (x: 0) => string;
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1: (x: 1) => string;
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2: (x: 2) => string;
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3: (x: 3) => string;
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4: (x: 4) => string;
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5: (x: 5) => string;
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6: (x: 6) => string;
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7: (x: 7) => string;
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8: (x: 8) => string;
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9: (x: 9) => string;
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10: (x: 10) => string;
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11: (x: 11) => string;
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12: (x: 12) => string;
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13: (x: 13) => string;
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14: (x: 14) => string;
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15: (x: 15) => string;
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16: (x: 16) => string;
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17: (x: 17) => string;
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18: (x: 18) => string;
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19: (x: 19) => string;
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20: (x: 20) => string;
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21: (x: 21) => string;
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22: (x: 22) => string;
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23: (x: 23) => string;
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24: (x: 24) => string;
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25: (x: 25) => string;
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26: (x: 26) => string;
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27: (x: 27) => string;
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28: (x: 28) => string;
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29: (x: 29) => string;
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30: (x: 30) => string;
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31: (x: 31) => string;
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32: (x: 32) => string;
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33: (x: 33) => string;
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34: (x: 34) => string;
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35: (x: 35) => string;
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36: (x: 36) => string;
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37: (x: 37) => string;
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38: (x: 38) => string;
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39: (x: 39) => string;
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40: (x: 40) => string;
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41: (x: 41) => string;
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42: (x: 42) => string;
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43: (x: 43) => string;
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44: (x: 44) => string;
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45: (x: 45) => string;
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46: (x: 46) => string;
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47: (x: 47) => string;
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48: (x: 48) => string;
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49: (x: 49) => string;
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50: (x: 50) => string;
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51: (x: 51) => string;
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}
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const obj: Partial<MyAPI> = {};
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declare var keys: (keyof MyAPI)[];
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for (const k of keys) {
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obj[k] = () => "12"; // shouldn't cause a complexity error
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}
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type PartialNull<T> = {[K in keyof T]?: T[K] | null};
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const obj2: PartialNull<MyAPI> = {};
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for (const k of keys) {
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obj2[k] = () => "12"; // shouldn't cause a complexity error
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}
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//// [partialOfLargeAPIIsAbleToBeWorkedWith.js]
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"use strict";
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var obj = {};
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for (var _i = 0, keys_1 = keys; _i < keys_1.length; _i++) {
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var k = keys_1[_i];
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obj[k] = function () { return "12"; }; // shouldn't cause a complexity error
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}
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var obj2 = {};
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for (var _a = 0, keys_2 = keys; _a < keys_2.length; _a++) {
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var k = keys_2[_a];
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obj2[k] = function () { return "12"; }; // shouldn't cause a complexity error
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}
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@ -0,0 +1,253 @@
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=== tests/cases/compiler/partialOfLargeAPIIsAbleToBeWorkedWith.ts ===
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interface MyAPI {
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>MyAPI : Symbol(MyAPI, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 0, 0))
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0: (x: 0) => string;
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>0 : Symbol(MyAPI[0], Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 0, 17))
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>x : Symbol(x, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 1, 8))
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1: (x: 1) => string;
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>1 : Symbol(MyAPI[1], Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 1, 24))
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>x : Symbol(x, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 2, 8))
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2: (x: 2) => string;
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>2 : Symbol(MyAPI[2], Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 2, 24))
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>x : Symbol(x, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 3, 8))
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3: (x: 3) => string;
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>3 : Symbol(MyAPI[3], Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 3, 24))
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>x : Symbol(x, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 4, 8))
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4: (x: 4) => string;
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>4 : Symbol(MyAPI[4], Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 4, 24))
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>x : Symbol(x, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 5, 8))
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5: (x: 5) => string;
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>5 : Symbol(MyAPI[5], Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 5, 24))
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>x : Symbol(x, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 6, 8))
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6: (x: 6) => string;
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>6 : Symbol(MyAPI[6], Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 6, 24))
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>x : Symbol(x, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 7, 8))
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7: (x: 7) => string;
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>7 : Symbol(MyAPI[7], Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 7, 24))
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>x : Symbol(x, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 8, 8))
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8: (x: 8) => string;
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>8 : Symbol(MyAPI[8], Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 8, 24))
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>x : Symbol(x, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 9, 8))
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9: (x: 9) => string;
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>9 : Symbol(MyAPI[9], Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 9, 24))
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>x : Symbol(x, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 10, 8))
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10: (x: 10) => string;
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>10 : Symbol(MyAPI[10], Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 10, 24))
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>x : Symbol(x, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 11, 9))
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11: (x: 11) => string;
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>11 : Symbol(MyAPI[11], Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 11, 26))
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>x : Symbol(x, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 12, 9))
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12: (x: 12) => string;
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>12 : Symbol(MyAPI[12], Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 12, 26))
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>x : Symbol(x, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 13, 9))
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13: (x: 13) => string;
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>13 : Symbol(MyAPI[13], Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 13, 26))
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>x : Symbol(x, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 14, 9))
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14: (x: 14) => string;
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>14 : Symbol(MyAPI[14], Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 14, 26))
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>x : Symbol(x, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 15, 9))
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15: (x: 15) => string;
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>15 : Symbol(MyAPI[15], Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 15, 26))
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>x : Symbol(x, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 16, 9))
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16: (x: 16) => string;
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>16 : Symbol(MyAPI[16], Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 16, 26))
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>x : Symbol(x, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 17, 9))
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17: (x: 17) => string;
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>17 : Symbol(MyAPI[17], Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 17, 26))
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>x : Symbol(x, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 18, 9))
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18: (x: 18) => string;
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>18 : Symbol(MyAPI[18], Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 18, 26))
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>x : Symbol(x, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 19, 9))
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19: (x: 19) => string;
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>19 : Symbol(MyAPI[19], Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 19, 26))
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>x : Symbol(x, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 20, 9))
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20: (x: 20) => string;
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>20 : Symbol(MyAPI[20], Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 20, 26))
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>x : Symbol(x, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 21, 9))
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21: (x: 21) => string;
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>21 : Symbol(MyAPI[21], Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 21, 26))
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>x : Symbol(x, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 22, 9))
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22: (x: 22) => string;
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>22 : Symbol(MyAPI[22], Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 22, 26))
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>x : Symbol(x, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 23, 9))
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23: (x: 23) => string;
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>23 : Symbol(MyAPI[23], Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 23, 26))
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>x : Symbol(x, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 24, 9))
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24: (x: 24) => string;
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>24 : Symbol(MyAPI[24], Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 24, 26))
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>x : Symbol(x, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 25, 9))
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25: (x: 25) => string;
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>25 : Symbol(MyAPI[25], Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 25, 26))
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>x : Symbol(x, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 26, 9))
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26: (x: 26) => string;
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>26 : Symbol(MyAPI[26], Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 26, 26))
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>x : Symbol(x, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 27, 9))
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27: (x: 27) => string;
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>27 : Symbol(MyAPI[27], Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 27, 26))
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>x : Symbol(x, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 28, 9))
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28: (x: 28) => string;
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>28 : Symbol(MyAPI[28], Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 28, 26))
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>x : Symbol(x, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 29, 9))
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29: (x: 29) => string;
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>29 : Symbol(MyAPI[29], Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 29, 26))
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>x : Symbol(x, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 30, 9))
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30: (x: 30) => string;
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>30 : Symbol(MyAPI[30], Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 30, 26))
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>x : Symbol(x, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 31, 9))
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31: (x: 31) => string;
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>31 : Symbol(MyAPI[31], Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 31, 26))
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>x : Symbol(x, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 32, 9))
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32: (x: 32) => string;
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>32 : Symbol(MyAPI[32], Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 32, 26))
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>x : Symbol(x, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 33, 9))
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33: (x: 33) => string;
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>33 : Symbol(MyAPI[33], Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 33, 26))
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>x : Symbol(x, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 34, 9))
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34: (x: 34) => string;
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>34 : Symbol(MyAPI[34], Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 34, 26))
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>x : Symbol(x, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 35, 9))
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35: (x: 35) => string;
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>35 : Symbol(MyAPI[35], Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 35, 26))
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>x : Symbol(x, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 36, 9))
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36: (x: 36) => string;
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>36 : Symbol(MyAPI[36], Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 36, 26))
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>x : Symbol(x, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 37, 9))
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37: (x: 37) => string;
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>37 : Symbol(MyAPI[37], Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 37, 26))
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>x : Symbol(x, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 38, 9))
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38: (x: 38) => string;
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>38 : Symbol(MyAPI[38], Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 38, 26))
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>x : Symbol(x, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 39, 9))
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39: (x: 39) => string;
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>39 : Symbol(MyAPI[39], Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 39, 26))
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>x : Symbol(x, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 40, 9))
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40: (x: 40) => string;
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>40 : Symbol(MyAPI[40], Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 40, 26))
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>x : Symbol(x, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 41, 9))
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41: (x: 41) => string;
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>41 : Symbol(MyAPI[41], Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 41, 26))
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>x : Symbol(x, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 42, 9))
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42: (x: 42) => string;
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>42 : Symbol(MyAPI[42], Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 42, 26))
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>x : Symbol(x, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 43, 9))
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43: (x: 43) => string;
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>43 : Symbol(MyAPI[43], Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 43, 26))
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>x : Symbol(x, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 44, 9))
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44: (x: 44) => string;
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>44 : Symbol(MyAPI[44], Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 44, 26))
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>x : Symbol(x, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 45, 9))
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45: (x: 45) => string;
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>45 : Symbol(MyAPI[45], Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 45, 26))
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>x : Symbol(x, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 46, 9))
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46: (x: 46) => string;
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>46 : Symbol(MyAPI[46], Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 46, 26))
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>x : Symbol(x, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 47, 9))
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47: (x: 47) => string;
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>47 : Symbol(MyAPI[47], Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 47, 26))
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>x : Symbol(x, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 48, 9))
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48: (x: 48) => string;
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>48 : Symbol(MyAPI[48], Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 48, 26))
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>x : Symbol(x, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 49, 9))
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49: (x: 49) => string;
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>49 : Symbol(MyAPI[49], Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 49, 26))
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>x : Symbol(x, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 50, 9))
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50: (x: 50) => string;
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>50 : Symbol(MyAPI[50], Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 50, 26))
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>x : Symbol(x, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 51, 9))
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51: (x: 51) => string;
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>51 : Symbol(MyAPI[51], Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 51, 26))
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>x : Symbol(x, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 52, 9))
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}
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const obj: Partial<MyAPI> = {};
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>obj : Symbol(obj, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 55, 5))
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>Partial : Symbol(Partial, Decl(lib.es5.d.ts, --, --))
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>MyAPI : Symbol(MyAPI, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 0, 0))
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declare var keys: (keyof MyAPI)[];
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>keys : Symbol(keys, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 57, 11))
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>MyAPI : Symbol(MyAPI, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 0, 0))
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for (const k of keys) {
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>k : Symbol(k, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 59, 10))
|
||||
>keys : Symbol(keys, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 57, 11))
|
||||
|
||||
obj[k] = () => "12"; // shouldn't cause a complexity error
|
||||
>obj : Symbol(obj, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 55, 5))
|
||||
>k : Symbol(k, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 59, 10))
|
||||
}
|
||||
|
||||
type PartialNull<T> = {[K in keyof T]?: T[K] | null};
|
||||
>PartialNull : Symbol(PartialNull, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 61, 1))
|
||||
>T : Symbol(T, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 63, 17))
|
||||
>K : Symbol(K, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 63, 24))
|
||||
>T : Symbol(T, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 63, 17))
|
||||
>T : Symbol(T, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 63, 17))
|
||||
>K : Symbol(K, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 63, 24))
|
||||
|
||||
const obj2: PartialNull<MyAPI> = {};
|
||||
>obj2 : Symbol(obj2, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 65, 5))
|
||||
>PartialNull : Symbol(PartialNull, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 61, 1))
|
||||
>MyAPI : Symbol(MyAPI, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 0, 0))
|
||||
|
||||
for (const k of keys) {
|
||||
>k : Symbol(k, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 67, 10))
|
||||
>keys : Symbol(keys, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 57, 11))
|
||||
|
||||
obj2[k] = () => "12"; // shouldn't cause a complexity error
|
||||
>obj2 : Symbol(obj2, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 65, 5))
|
||||
>k : Symbol(k, Decl(partialOfLargeAPIIsAbleToBeWorkedWith.ts, 67, 10))
|
||||
}
|
||||
|
||||
@ -0,0 +1,252 @@
|
||||
=== tests/cases/compiler/partialOfLargeAPIIsAbleToBeWorkedWith.ts ===
|
||||
interface MyAPI {
|
||||
0: (x: 0) => string;
|
||||
>0 : (x: 0) => string
|
||||
>x : 0
|
||||
|
||||
1: (x: 1) => string;
|
||||
>1 : (x: 1) => string
|
||||
>x : 1
|
||||
|
||||
2: (x: 2) => string;
|
||||
>2 : (x: 2) => string
|
||||
>x : 2
|
||||
|
||||
3: (x: 3) => string;
|
||||
>3 : (x: 3) => string
|
||||
>x : 3
|
||||
|
||||
4: (x: 4) => string;
|
||||
>4 : (x: 4) => string
|
||||
>x : 4
|
||||
|
||||
5: (x: 5) => string;
|
||||
>5 : (x: 5) => string
|
||||
>x : 5
|
||||
|
||||
6: (x: 6) => string;
|
||||
>6 : (x: 6) => string
|
||||
>x : 6
|
||||
|
||||
7: (x: 7) => string;
|
||||
>7 : (x: 7) => string
|
||||
>x : 7
|
||||
|
||||
8: (x: 8) => string;
|
||||
>8 : (x: 8) => string
|
||||
>x : 8
|
||||
|
||||
9: (x: 9) => string;
|
||||
>9 : (x: 9) => string
|
||||
>x : 9
|
||||
|
||||
10: (x: 10) => string;
|
||||
>10 : (x: 10) => string
|
||||
>x : 10
|
||||
|
||||
11: (x: 11) => string;
|
||||
>11 : (x: 11) => string
|
||||
>x : 11
|
||||
|
||||
12: (x: 12) => string;
|
||||
>12 : (x: 12) => string
|
||||
>x : 12
|
||||
|
||||
13: (x: 13) => string;
|
||||
>13 : (x: 13) => string
|
||||
>x : 13
|
||||
|
||||
14: (x: 14) => string;
|
||||
>14 : (x: 14) => string
|
||||
>x : 14
|
||||
|
||||
15: (x: 15) => string;
|
||||
>15 : (x: 15) => string
|
||||
>x : 15
|
||||
|
||||
16: (x: 16) => string;
|
||||
>16 : (x: 16) => string
|
||||
>x : 16
|
||||
|
||||
17: (x: 17) => string;
|
||||
>17 : (x: 17) => string
|
||||
>x : 17
|
||||
|
||||
18: (x: 18) => string;
|
||||
>18 : (x: 18) => string
|
||||
>x : 18
|
||||
|
||||
19: (x: 19) => string;
|
||||
>19 : (x: 19) => string
|
||||
>x : 19
|
||||
|
||||
20: (x: 20) => string;
|
||||
>20 : (x: 20) => string
|
||||
>x : 20
|
||||
|
||||
21: (x: 21) => string;
|
||||
>21 : (x: 21) => string
|
||||
>x : 21
|
||||
|
||||
22: (x: 22) => string;
|
||||
>22 : (x: 22) => string
|
||||
>x : 22
|
||||
|
||||
23: (x: 23) => string;
|
||||
>23 : (x: 23) => string
|
||||
>x : 23
|
||||
|
||||
24: (x: 24) => string;
|
||||
>24 : (x: 24) => string
|
||||
>x : 24
|
||||
|
||||
25: (x: 25) => string;
|
||||
>25 : (x: 25) => string
|
||||
>x : 25
|
||||
|
||||
26: (x: 26) => string;
|
||||
>26 : (x: 26) => string
|
||||
>x : 26
|
||||
|
||||
27: (x: 27) => string;
|
||||
>27 : (x: 27) => string
|
||||
>x : 27
|
||||
|
||||
28: (x: 28) => string;
|
||||
>28 : (x: 28) => string
|
||||
>x : 28
|
||||
|
||||
29: (x: 29) => string;
|
||||
>29 : (x: 29) => string
|
||||
>x : 29
|
||||
|
||||
30: (x: 30) => string;
|
||||
>30 : (x: 30) => string
|
||||
>x : 30
|
||||
|
||||
31: (x: 31) => string;
|
||||
>31 : (x: 31) => string
|
||||
>x : 31
|
||||
|
||||
32: (x: 32) => string;
|
||||
>32 : (x: 32) => string
|
||||
>x : 32
|
||||
|
||||
33: (x: 33) => string;
|
||||
>33 : (x: 33) => string
|
||||
>x : 33
|
||||
|
||||
34: (x: 34) => string;
|
||||
>34 : (x: 34) => string
|
||||
>x : 34
|
||||
|
||||
35: (x: 35) => string;
|
||||
>35 : (x: 35) => string
|
||||
>x : 35
|
||||
|
||||
36: (x: 36) => string;
|
||||
>36 : (x: 36) => string
|
||||
>x : 36
|
||||
|
||||
37: (x: 37) => string;
|
||||
>37 : (x: 37) => string
|
||||
>x : 37
|
||||
|
||||
38: (x: 38) => string;
|
||||
>38 : (x: 38) => string
|
||||
>x : 38
|
||||
|
||||
39: (x: 39) => string;
|
||||
>39 : (x: 39) => string
|
||||
>x : 39
|
||||
|
||||
40: (x: 40) => string;
|
||||
>40 : (x: 40) => string
|
||||
>x : 40
|
||||
|
||||
41: (x: 41) => string;
|
||||
>41 : (x: 41) => string
|
||||
>x : 41
|
||||
|
||||
42: (x: 42) => string;
|
||||
>42 : (x: 42) => string
|
||||
>x : 42
|
||||
|
||||
43: (x: 43) => string;
|
||||
>43 : (x: 43) => string
|
||||
>x : 43
|
||||
|
||||
44: (x: 44) => string;
|
||||
>44 : (x: 44) => string
|
||||
>x : 44
|
||||
|
||||
45: (x: 45) => string;
|
||||
>45 : (x: 45) => string
|
||||
>x : 45
|
||||
|
||||
46: (x: 46) => string;
|
||||
>46 : (x: 46) => string
|
||||
>x : 46
|
||||
|
||||
47: (x: 47) => string;
|
||||
>47 : (x: 47) => string
|
||||
>x : 47
|
||||
|
||||
48: (x: 48) => string;
|
||||
>48 : (x: 48) => string
|
||||
>x : 48
|
||||
|
||||
49: (x: 49) => string;
|
||||
>49 : (x: 49) => string
|
||||
>x : 49
|
||||
|
||||
50: (x: 50) => string;
|
||||
>50 : (x: 50) => string
|
||||
>x : 50
|
||||
|
||||
51: (x: 51) => string;
|
||||
>51 : (x: 51) => string
|
||||
>x : 51
|
||||
}
|
||||
|
||||
const obj: Partial<MyAPI> = {};
|
||||
>obj : Partial<MyAPI>
|
||||
>{} : {}
|
||||
|
||||
declare var keys: (keyof MyAPI)[];
|
||||
>keys : (0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51)[]
|
||||
|
||||
for (const k of keys) {
|
||||
>k : 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51
|
||||
>keys : (0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51)[]
|
||||
|
||||
obj[k] = () => "12"; // shouldn't cause a complexity error
|
||||
>obj[k] = () => "12" : () => string
|
||||
>obj[k] : (((x: 0) => string) & ((x: 1) => string) & ((x: 2) => string) & ((x: 3) => string) & ((x: 4) => string) & ((x: 5) => string) & ((x: 6) => string) & ((x: 7) => string) & ((x: 8) => string) & ((x: 9) => string) & ((x: 10) => string) & ((x: 11) => string) & ((x: 12) => string) & ((x: 13) => string) & ((x: 14) => string) & ((x: 15) => string) & ((x: 16) => string) & ((x: 17) => string) & ((x: 18) => string) & ((x: 19) => string) & ((x: 20) => string) & ((x: 21) => string) & ((x: 22) => string) & ((x: 23) => string) & ((x: 24) => string) & ((x: 25) => string) & ((x: 26) => string) & ((x: 27) => string) & ((x: 28) => string) & ((x: 29) => string) & ((x: 30) => string) & ((x: 31) => string) & ((x: 32) => string) & ((x: 33) => string) & ((x: 34) => string) & ((x: 35) => string) & ((x: 36) => string) & ((x: 37) => string) & ((x: 38) => string) & ((x: 39) => string) & ((x: 40) => string) & ((x: 41) => string) & ((x: 42) => string) & ((x: 43) => string) & ((x: 44) => string) & ((x: 45) => string) & ((x: 46) => string) & ((x: 47) => string) & ((x: 48) => string) & ((x: 49) => string) & ((x: 50) => string) & ((x: 51) => string)) | undefined
|
||||
>obj : Partial<MyAPI>
|
||||
>k : 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51
|
||||
>() => "12" : () => string
|
||||
>"12" : "12"
|
||||
}
|
||||
|
||||
type PartialNull<T> = {[K in keyof T]?: T[K] | null};
|
||||
>PartialNull : PartialNull<T>
|
||||
>null : null
|
||||
|
||||
const obj2: PartialNull<MyAPI> = {};
|
||||
>obj2 : PartialNull<MyAPI>
|
||||
>{} : {}
|
||||
|
||||
for (const k of keys) {
|
||||
>k : 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51
|
||||
>keys : (0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51)[]
|
||||
|
||||
obj2[k] = () => "12"; // shouldn't cause a complexity error
|
||||
>obj2[k] = () => "12" : () => string
|
||||
>obj2[k] : (((x: 0) => string) & ((x: 1) => string) & ((x: 2) => string) & ((x: 3) => string) & ((x: 4) => string) & ((x: 5) => string) & ((x: 6) => string) & ((x: 7) => string) & ((x: 8) => string) & ((x: 9) => string) & ((x: 10) => string) & ((x: 11) => string) & ((x: 12) => string) & ((x: 13) => string) & ((x: 14) => string) & ((x: 15) => string) & ((x: 16) => string) & ((x: 17) => string) & ((x: 18) => string) & ((x: 19) => string) & ((x: 20) => string) & ((x: 21) => string) & ((x: 22) => string) & ((x: 23) => string) & ((x: 24) => string) & ((x: 25) => string) & ((x: 26) => string) & ((x: 27) => string) & ((x: 28) => string) & ((x: 29) => string) & ((x: 30) => string) & ((x: 31) => string) & ((x: 32) => string) & ((x: 33) => string) & ((x: 34) => string) & ((x: 35) => string) & ((x: 36) => string) & ((x: 37) => string) & ((x: 38) => string) & ((x: 39) => string) & ((x: 40) => string) & ((x: 41) => string) & ((x: 42) => string) & ((x: 43) => string) & ((x: 44) => string) & ((x: 45) => string) & ((x: 46) => string) & ((x: 47) => string) & ((x: 48) => string) & ((x: 49) => string) & ((x: 50) => string) & ((x: 51) => string)) | null | undefined
|
||||
>obj2 : PartialNull<MyAPI>
|
||||
>k : 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51
|
||||
>() => "12" : () => string
|
||||
>"12" : "12"
|
||||
}
|
||||
|
||||
@ -0,0 +1,71 @@
|
||||
// @strict: true
|
||||
interface MyAPI {
|
||||
0: (x: 0) => string;
|
||||
1: (x: 1) => string;
|
||||
2: (x: 2) => string;
|
||||
3: (x: 3) => string;
|
||||
4: (x: 4) => string;
|
||||
5: (x: 5) => string;
|
||||
6: (x: 6) => string;
|
||||
7: (x: 7) => string;
|
||||
8: (x: 8) => string;
|
||||
9: (x: 9) => string;
|
||||
10: (x: 10) => string;
|
||||
11: (x: 11) => string;
|
||||
12: (x: 12) => string;
|
||||
13: (x: 13) => string;
|
||||
14: (x: 14) => string;
|
||||
15: (x: 15) => string;
|
||||
16: (x: 16) => string;
|
||||
17: (x: 17) => string;
|
||||
18: (x: 18) => string;
|
||||
19: (x: 19) => string;
|
||||
20: (x: 20) => string;
|
||||
21: (x: 21) => string;
|
||||
22: (x: 22) => string;
|
||||
23: (x: 23) => string;
|
||||
24: (x: 24) => string;
|
||||
25: (x: 25) => string;
|
||||
26: (x: 26) => string;
|
||||
27: (x: 27) => string;
|
||||
28: (x: 28) => string;
|
||||
29: (x: 29) => string;
|
||||
30: (x: 30) => string;
|
||||
31: (x: 31) => string;
|
||||
32: (x: 32) => string;
|
||||
33: (x: 33) => string;
|
||||
34: (x: 34) => string;
|
||||
35: (x: 35) => string;
|
||||
36: (x: 36) => string;
|
||||
37: (x: 37) => string;
|
||||
38: (x: 38) => string;
|
||||
39: (x: 39) => string;
|
||||
40: (x: 40) => string;
|
||||
41: (x: 41) => string;
|
||||
42: (x: 42) => string;
|
||||
43: (x: 43) => string;
|
||||
44: (x: 44) => string;
|
||||
45: (x: 45) => string;
|
||||
46: (x: 46) => string;
|
||||
47: (x: 47) => string;
|
||||
48: (x: 48) => string;
|
||||
49: (x: 49) => string;
|
||||
50: (x: 50) => string;
|
||||
51: (x: 51) => string;
|
||||
}
|
||||
|
||||
const obj: Partial<MyAPI> = {};
|
||||
|
||||
declare var keys: (keyof MyAPI)[];
|
||||
|
||||
for (const k of keys) {
|
||||
obj[k] = () => "12"; // shouldn't cause a complexity error
|
||||
}
|
||||
|
||||
type PartialNull<T> = {[K in keyof T]?: T[K] | null};
|
||||
|
||||
const obj2: PartialNull<MyAPI> = {};
|
||||
|
||||
for (const k of keys) {
|
||||
obj2[k] = () => "12"; // shouldn't cause a complexity error
|
||||
}
|
||||
Loading…
x
Reference in New Issue
Block a user