176 lines
7.1 KiB
Plaintext
176 lines
7.1 KiB
Plaintext
=== tests/cases/conformance/expressions/typeGuards/typeGuardOfFormTypeOfString.ts ===
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class C { private p: string };
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>C : Symbol(C, Decl(typeGuardOfFormTypeOfString.ts, 0, 0))
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>p : Symbol(p, Decl(typeGuardOfFormTypeOfString.ts, 0, 9))
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var str: string;
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>str : Symbol(str, Decl(typeGuardOfFormTypeOfString.ts, 2, 3))
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var bool: boolean;
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>bool : Symbol(bool, Decl(typeGuardOfFormTypeOfString.ts, 3, 3))
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var num: number;
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>num : Symbol(num, Decl(typeGuardOfFormTypeOfString.ts, 4, 3))
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var strOrNum: string | number;
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>strOrNum : Symbol(strOrNum, Decl(typeGuardOfFormTypeOfString.ts, 5, 3))
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var strOrBool: string | boolean;
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>strOrBool : Symbol(strOrBool, Decl(typeGuardOfFormTypeOfString.ts, 6, 3))
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var numOrBool: number | boolean
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>numOrBool : Symbol(numOrBool, Decl(typeGuardOfFormTypeOfString.ts, 7, 3))
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var strOrNumOrBool: string | number | boolean;
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>strOrNumOrBool : Symbol(strOrNumOrBool, Decl(typeGuardOfFormTypeOfString.ts, 8, 3))
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var strOrC: string | C;
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>strOrC : Symbol(strOrC, Decl(typeGuardOfFormTypeOfString.ts, 9, 3))
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>C : Symbol(C, Decl(typeGuardOfFormTypeOfString.ts, 0, 0))
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var numOrC: number | C;
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>numOrC : Symbol(numOrC, Decl(typeGuardOfFormTypeOfString.ts, 10, 3))
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>C : Symbol(C, Decl(typeGuardOfFormTypeOfString.ts, 0, 0))
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var boolOrC: boolean | C;
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>boolOrC : Symbol(boolOrC, Decl(typeGuardOfFormTypeOfString.ts, 11, 3))
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>C : Symbol(C, Decl(typeGuardOfFormTypeOfString.ts, 0, 0))
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var c: C;
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>c : Symbol(c, Decl(typeGuardOfFormTypeOfString.ts, 12, 3))
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>C : Symbol(C, Decl(typeGuardOfFormTypeOfString.ts, 0, 0))
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// A type guard of the form typeof x === s,
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// where s is a string literal with the value 'string', 'number', or 'boolean',
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// - when true, narrows the type of x to the given primitive type, or
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// - when false, removes the primitive type from the type of x.
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if (typeof strOrNum === "string") {
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>strOrNum : Symbol(strOrNum, Decl(typeGuardOfFormTypeOfString.ts, 5, 3))
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str = strOrNum; // string
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>str : Symbol(str, Decl(typeGuardOfFormTypeOfString.ts, 2, 3))
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>strOrNum : Symbol(strOrNum, Decl(typeGuardOfFormTypeOfString.ts, 5, 3))
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}
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else {
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num === strOrNum; // number
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>num : Symbol(num, Decl(typeGuardOfFormTypeOfString.ts, 4, 3))
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>strOrNum : Symbol(strOrNum, Decl(typeGuardOfFormTypeOfString.ts, 5, 3))
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}
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if (typeof strOrBool === "string") {
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>strOrBool : Symbol(strOrBool, Decl(typeGuardOfFormTypeOfString.ts, 6, 3))
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str = strOrBool; // string
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>str : Symbol(str, Decl(typeGuardOfFormTypeOfString.ts, 2, 3))
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>strOrBool : Symbol(strOrBool, Decl(typeGuardOfFormTypeOfString.ts, 6, 3))
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}
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else {
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bool = strOrBool; // boolean
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>bool : Symbol(bool, Decl(typeGuardOfFormTypeOfString.ts, 3, 3))
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>strOrBool : Symbol(strOrBool, Decl(typeGuardOfFormTypeOfString.ts, 6, 3))
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}
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if (typeof strOrNumOrBool === "string") {
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>strOrNumOrBool : Symbol(strOrNumOrBool, Decl(typeGuardOfFormTypeOfString.ts, 8, 3))
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str = strOrNumOrBool; // string
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>str : Symbol(str, Decl(typeGuardOfFormTypeOfString.ts, 2, 3))
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>strOrNumOrBool : Symbol(strOrNumOrBool, Decl(typeGuardOfFormTypeOfString.ts, 8, 3))
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}
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else {
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numOrBool = strOrNumOrBool; // number | boolean
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>numOrBool : Symbol(numOrBool, Decl(typeGuardOfFormTypeOfString.ts, 7, 3))
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>strOrNumOrBool : Symbol(strOrNumOrBool, Decl(typeGuardOfFormTypeOfString.ts, 8, 3))
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}
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if (typeof strOrC === "string") {
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>strOrC : Symbol(strOrC, Decl(typeGuardOfFormTypeOfString.ts, 9, 3))
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str = strOrC; // string
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>str : Symbol(str, Decl(typeGuardOfFormTypeOfString.ts, 2, 3))
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>strOrC : Symbol(strOrC, Decl(typeGuardOfFormTypeOfString.ts, 9, 3))
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}
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else {
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c = strOrC; // C
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>c : Symbol(c, Decl(typeGuardOfFormTypeOfString.ts, 12, 3))
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>strOrC : Symbol(strOrC, Decl(typeGuardOfFormTypeOfString.ts, 9, 3))
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}
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// Narrowing occurs only if target type is a subtype of variable type
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if (typeof numOrBool === "string") {
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>numOrBool : Symbol(numOrBool, Decl(typeGuardOfFormTypeOfString.ts, 7, 3))
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var x1: number | boolean = numOrBool; // number | boolean
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>x1 : Symbol(x1, Decl(typeGuardOfFormTypeOfString.ts, 45, 7), Decl(typeGuardOfFormTypeOfString.ts, 81, 7))
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>numOrBool : Symbol(numOrBool, Decl(typeGuardOfFormTypeOfString.ts, 7, 3))
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}
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else {
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var x2: number | boolean = numOrBool; // number | boolean
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>x2 : Symbol(x2, Decl(typeGuardOfFormTypeOfString.ts, 48, 7), Decl(typeGuardOfFormTypeOfString.ts, 84, 7))
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>numOrBool : Symbol(numOrBool, Decl(typeGuardOfFormTypeOfString.ts, 7, 3))
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}
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// A type guard of the form typeof x !== s, where s is a string literal,
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// - when true, narrows the type of x by typeof x === s when false, or
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// - when false, narrows the type of x by typeof x === s when true.
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if (typeof strOrNum !== "string") {
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>strOrNum : Symbol(strOrNum, Decl(typeGuardOfFormTypeOfString.ts, 5, 3))
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num === strOrNum; // number
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>num : Symbol(num, Decl(typeGuardOfFormTypeOfString.ts, 4, 3))
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>strOrNum : Symbol(strOrNum, Decl(typeGuardOfFormTypeOfString.ts, 5, 3))
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}
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else {
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str = strOrNum; // string
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>str : Symbol(str, Decl(typeGuardOfFormTypeOfString.ts, 2, 3))
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>strOrNum : Symbol(strOrNum, Decl(typeGuardOfFormTypeOfString.ts, 5, 3))
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}
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if (typeof strOrBool !== "string") {
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>strOrBool : Symbol(strOrBool, Decl(typeGuardOfFormTypeOfString.ts, 6, 3))
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bool = strOrBool; // boolean
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>bool : Symbol(bool, Decl(typeGuardOfFormTypeOfString.ts, 3, 3))
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>strOrBool : Symbol(strOrBool, Decl(typeGuardOfFormTypeOfString.ts, 6, 3))
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}
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else {
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str = strOrBool; // string
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>str : Symbol(str, Decl(typeGuardOfFormTypeOfString.ts, 2, 3))
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>strOrBool : Symbol(strOrBool, Decl(typeGuardOfFormTypeOfString.ts, 6, 3))
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}
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if (typeof strOrNumOrBool !== "string") {
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>strOrNumOrBool : Symbol(strOrNumOrBool, Decl(typeGuardOfFormTypeOfString.ts, 8, 3))
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numOrBool = strOrNumOrBool; // number | boolean
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>numOrBool : Symbol(numOrBool, Decl(typeGuardOfFormTypeOfString.ts, 7, 3))
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>strOrNumOrBool : Symbol(strOrNumOrBool, Decl(typeGuardOfFormTypeOfString.ts, 8, 3))
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}
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else {
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str = strOrNumOrBool; // string
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>str : Symbol(str, Decl(typeGuardOfFormTypeOfString.ts, 2, 3))
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>strOrNumOrBool : Symbol(strOrNumOrBool, Decl(typeGuardOfFormTypeOfString.ts, 8, 3))
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}
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if (typeof strOrC !== "string") {
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>strOrC : Symbol(strOrC, Decl(typeGuardOfFormTypeOfString.ts, 9, 3))
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c = strOrC; // C
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>c : Symbol(c, Decl(typeGuardOfFormTypeOfString.ts, 12, 3))
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>strOrC : Symbol(strOrC, Decl(typeGuardOfFormTypeOfString.ts, 9, 3))
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}
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else {
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str = strOrC; // string
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>str : Symbol(str, Decl(typeGuardOfFormTypeOfString.ts, 2, 3))
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>strOrC : Symbol(strOrC, Decl(typeGuardOfFormTypeOfString.ts, 9, 3))
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}
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// Narrowing occurs only if target type is a subtype of variable type
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if (typeof numOrBool !== "string") {
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>numOrBool : Symbol(numOrBool, Decl(typeGuardOfFormTypeOfString.ts, 7, 3))
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var x1: number | boolean = numOrBool; // number | boolean
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>x1 : Symbol(x1, Decl(typeGuardOfFormTypeOfString.ts, 45, 7), Decl(typeGuardOfFormTypeOfString.ts, 81, 7))
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>numOrBool : Symbol(numOrBool, Decl(typeGuardOfFormTypeOfString.ts, 7, 3))
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}
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else {
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var x2: number | boolean = numOrBool; // number | boolean
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>x2 : Symbol(x2, Decl(typeGuardOfFormTypeOfString.ts, 48, 7), Decl(typeGuardOfFormTypeOfString.ts, 84, 7))
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>numOrBool : Symbol(numOrBool, Decl(typeGuardOfFormTypeOfString.ts, 7, 3))
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}
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