Test removing undefined from initialized, annotated parameters
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4 changed files with 124 additions and 21 deletions
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@ -13,12 +13,24 @@ function foo1(x: string = "string", b: number) {
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}
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function foo2(x = "string", b: number) {
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x.length;
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x.length; // ok, should be string
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}
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// .d.ts should have `T | undefined` for foo1 and foo2
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function foo3(x: string | undefined = "string", b: number) {
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x.length; // ok, should be string
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}
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function foo4(x: string | undefined = undefined, b: number) {
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x; // should be string | undefined
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}
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// .d.ts should have `string | undefined` for foo1, foo2, foo3 and foo4
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foo1(undefined, 1);
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foo2(undefined, 1);
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foo3(undefined, 1);
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foo4(undefined, 1);
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function removeUndefinedButNotFalse(x = true) {
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@ -55,11 +67,21 @@ function foo1(x, b) {
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}
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function foo2(x, b) {
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if (x === void 0) { x = "string"; }
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x.length;
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x.length; // ok, should be string
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}
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// .d.ts should have `T | undefined` for foo1 and foo2
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function foo3(x, b) {
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if (x === void 0) { x = "string"; }
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x.length; // ok, should be string
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}
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function foo4(x, b) {
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if (x === void 0) { x = undefined; }
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x; // should be string | undefined
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}
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// .d.ts should have `string | undefined` for foo1, foo2, foo3 and foo4
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foo1(undefined, 1);
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foo2(undefined, 1);
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foo3(undefined, 1);
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foo4(undefined, 1);
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function removeUndefinedButNotFalse(x) {
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if (x === void 0) { x = true; }
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if (x === false) {
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@ -83,6 +105,8 @@ declare function g(addUndefined: string | undefined, addDefined: number): number
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declare let total: number;
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declare function foo1(x: string | undefined, b: number): void;
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declare function foo2(x: string | undefined, b: number): void;
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declare function foo3(x: string | undefined, b: number): void;
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declare function foo4(x: string | undefined, b: number): void;
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declare function removeUndefinedButNotFalse(x?: boolean | undefined): false | undefined;
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declare const cond: boolean;
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declare function removeNothing(y?: boolean | undefined): boolean;
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@ -51,13 +51,36 @@ function foo2(x = "string", b: number) {
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>x : Symbol(x, Decl(defaultParameterAddsUndefinedWithStrictNullChecks.ts, 13, 14))
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>b : Symbol(b, Decl(defaultParameterAddsUndefinedWithStrictNullChecks.ts, 13, 27))
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x.length;
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x.length; // ok, should be string
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>x.length : Symbol(String.length, Decl(lib.d.ts, --, --))
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>x : Symbol(x, Decl(defaultParameterAddsUndefinedWithStrictNullChecks.ts, 13, 14))
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>length : Symbol(String.length, Decl(lib.d.ts, --, --))
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}
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// .d.ts should have `T | undefined` for foo1 and foo2
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function foo3(x: string | undefined = "string", b: number) {
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>foo3 : Symbol(foo3, Decl(defaultParameterAddsUndefinedWithStrictNullChecks.ts, 15, 1))
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>x : Symbol(x, Decl(defaultParameterAddsUndefinedWithStrictNullChecks.ts, 17, 14))
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>b : Symbol(b, Decl(defaultParameterAddsUndefinedWithStrictNullChecks.ts, 17, 47))
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x.length; // ok, should be string
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>x.length : Symbol(String.length, Decl(lib.d.ts, --, --))
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>x : Symbol(x, Decl(defaultParameterAddsUndefinedWithStrictNullChecks.ts, 17, 14))
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>length : Symbol(String.length, Decl(lib.d.ts, --, --))
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}
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function foo4(x: string | undefined = undefined, b: number) {
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>foo4 : Symbol(foo4, Decl(defaultParameterAddsUndefinedWithStrictNullChecks.ts, 19, 1))
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>x : Symbol(x, Decl(defaultParameterAddsUndefinedWithStrictNullChecks.ts, 21, 14))
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>undefined : Symbol(undefined)
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>b : Symbol(b, Decl(defaultParameterAddsUndefinedWithStrictNullChecks.ts, 21, 48))
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x; // should be string | undefined
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>x : Symbol(x, Decl(defaultParameterAddsUndefinedWithStrictNullChecks.ts, 21, 14))
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}
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// .d.ts should have `string | undefined` for foo1, foo2, foo3 and foo4
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foo1(undefined, 1);
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>foo1 : Symbol(foo1, Decl(defaultParameterAddsUndefinedWithStrictNullChecks.ts, 7, 36))
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>undefined : Symbol(undefined)
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@ -66,37 +89,45 @@ foo2(undefined, 1);
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>foo2 : Symbol(foo2, Decl(defaultParameterAddsUndefinedWithStrictNullChecks.ts, 11, 1))
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>undefined : Symbol(undefined)
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foo3(undefined, 1);
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>foo3 : Symbol(foo3, Decl(defaultParameterAddsUndefinedWithStrictNullChecks.ts, 15, 1))
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>undefined : Symbol(undefined)
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foo4(undefined, 1);
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>foo4 : Symbol(foo4, Decl(defaultParameterAddsUndefinedWithStrictNullChecks.ts, 19, 1))
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>undefined : Symbol(undefined)
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function removeUndefinedButNotFalse(x = true) {
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>removeUndefinedButNotFalse : Symbol(removeUndefinedButNotFalse, Decl(defaultParameterAddsUndefinedWithStrictNullChecks.ts, 19, 19))
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>x : Symbol(x, Decl(defaultParameterAddsUndefinedWithStrictNullChecks.ts, 22, 36))
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>removeUndefinedButNotFalse : Symbol(removeUndefinedButNotFalse, Decl(defaultParameterAddsUndefinedWithStrictNullChecks.ts, 31, 19))
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>x : Symbol(x, Decl(defaultParameterAddsUndefinedWithStrictNullChecks.ts, 34, 36))
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if (x === false) {
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>x : Symbol(x, Decl(defaultParameterAddsUndefinedWithStrictNullChecks.ts, 22, 36))
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>x : Symbol(x, Decl(defaultParameterAddsUndefinedWithStrictNullChecks.ts, 34, 36))
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return x;
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>x : Symbol(x, Decl(defaultParameterAddsUndefinedWithStrictNullChecks.ts, 22, 36))
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>x : Symbol(x, Decl(defaultParameterAddsUndefinedWithStrictNullChecks.ts, 34, 36))
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}
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}
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declare const cond: boolean;
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>cond : Symbol(cond, Decl(defaultParameterAddsUndefinedWithStrictNullChecks.ts, 28, 13))
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>cond : Symbol(cond, Decl(defaultParameterAddsUndefinedWithStrictNullChecks.ts, 40, 13))
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function removeNothing(y = cond ? true : undefined) {
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>removeNothing : Symbol(removeNothing, Decl(defaultParameterAddsUndefinedWithStrictNullChecks.ts, 28, 28))
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>y : Symbol(y, Decl(defaultParameterAddsUndefinedWithStrictNullChecks.ts, 29, 23))
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>cond : Symbol(cond, Decl(defaultParameterAddsUndefinedWithStrictNullChecks.ts, 28, 13))
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>removeNothing : Symbol(removeNothing, Decl(defaultParameterAddsUndefinedWithStrictNullChecks.ts, 40, 28))
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>y : Symbol(y, Decl(defaultParameterAddsUndefinedWithStrictNullChecks.ts, 41, 23))
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>cond : Symbol(cond, Decl(defaultParameterAddsUndefinedWithStrictNullChecks.ts, 40, 13))
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>undefined : Symbol(undefined)
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if (y !== undefined) {
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>y : Symbol(y, Decl(defaultParameterAddsUndefinedWithStrictNullChecks.ts, 29, 23))
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>y : Symbol(y, Decl(defaultParameterAddsUndefinedWithStrictNullChecks.ts, 41, 23))
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>undefined : Symbol(undefined)
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if (y === false) {
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>y : Symbol(y, Decl(defaultParameterAddsUndefinedWithStrictNullChecks.ts, 29, 23))
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>y : Symbol(y, Decl(defaultParameterAddsUndefinedWithStrictNullChecks.ts, 41, 23))
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return y;
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>y : Symbol(y, Decl(defaultParameterAddsUndefinedWithStrictNullChecks.ts, 29, 23))
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>y : Symbol(y, Decl(defaultParameterAddsUndefinedWithStrictNullChecks.ts, 41, 23))
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}
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}
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return true;
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@ -78,13 +78,37 @@ function foo2(x = "string", b: number) {
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>"string" : "string"
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>b : number
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x.length;
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x.length; // ok, should be string
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>x.length : number
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>x : string
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>length : number
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}
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// .d.ts should have `T | undefined` for foo1 and foo2
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function foo3(x: string | undefined = "string", b: number) {
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>foo3 : (x: string | undefined, b: number) => void
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>x : string
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>"string" : "string"
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>b : number
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x.length; // ok, should be string
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>x.length : number
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>x : string
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>length : number
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}
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function foo4(x: string | undefined = undefined, b: number) {
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>foo4 : (x: string | undefined, b: number) => void
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>x : string | undefined
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>undefined : undefined
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>b : number
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x; // should be string | undefined
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>x : string | undefined
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}
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// .d.ts should have `string | undefined` for foo1, foo2, foo3 and foo4
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foo1(undefined, 1);
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>foo1(undefined, 1) : void
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>foo1 : (x: string | undefined, b: number) => void
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@ -97,6 +121,18 @@ foo2(undefined, 1);
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>undefined : undefined
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>1 : 1
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foo3(undefined, 1);
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>foo3(undefined, 1) : void
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>foo3 : (x: string | undefined, b: number) => void
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>undefined : undefined
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>1 : 1
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foo4(undefined, 1);
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>foo4(undefined, 1) : void
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>foo4 : (x: string | undefined, b: number) => void
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>undefined : undefined
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>1 : 1
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function removeUndefinedButNotFalse(x = true) {
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>removeUndefinedButNotFalse : (x?: boolean | undefined) => false | undefined
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@ -14,12 +14,24 @@ function foo1(x: string = "string", b: number) {
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}
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function foo2(x = "string", b: number) {
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x.length;
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x.length; // ok, should be string
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}
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// .d.ts should have `T | undefined` for foo1 and foo2
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function foo3(x: string | undefined = "string", b: number) {
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x.length; // ok, should be string
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}
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function foo4(x: string | undefined = undefined, b: number) {
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x; // should be string | undefined
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}
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// .d.ts should have `string | undefined` for foo1, foo2, foo3 and foo4
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foo1(undefined, 1);
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foo2(undefined, 1);
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foo3(undefined, 1);
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foo4(undefined, 1);
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function removeUndefinedButNotFalse(x = true) {
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