339 lines
12 KiB
Plaintext
339 lines
12 KiB
Plaintext
=== tests/cases/conformance/expressions/typeGuards/typeGuardsInFunction.ts ===
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// Note that type guards affect types of variables and parameters only and
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// have no effect on members of objects such as properties.
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// variables in global
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var num: number;
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>num : number
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var var1: string | number;
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>var1 : string | number
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// Inside function declaration
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function f(param: string | number) {
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>f : (param: string | number) => void
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>param : string | number
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// global vars in function declaration
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num = typeof var1 === "string" && var1.length; // string
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>num = typeof var1 === "string" && var1.length : number
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>num : number
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>typeof var1 === "string" && var1.length : number
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>typeof var1 === "string" : boolean
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>typeof var1 : string
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>var1 : string | number
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>"string" : string
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>var1.length : number
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>var1 : string
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>length : number
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// variables in function declaration
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var var2: string | number;
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>var2 : string | number
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num = typeof var2 === "string" && var2.length; // string
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>num = typeof var2 === "string" && var2.length : number
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>num : number
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>typeof var2 === "string" && var2.length : number
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>typeof var2 === "string" : boolean
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>typeof var2 : string
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>var2 : string | number
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>"string" : string
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>var2.length : number
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>var2 : string
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>length : number
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// parameters in function declaration
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num = typeof param === "string" && param.length; // string
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>num = typeof param === "string" && param.length : number
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>num : number
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>typeof param === "string" && param.length : number
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>typeof param === "string" : boolean
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>typeof param : string
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>param : string | number
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>"string" : string
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>param.length : number
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>param : string
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>length : number
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}
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// local function declaration
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function f1(param: string | number) {
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>f1 : (param: string | number) => void
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>param : string | number
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var var2: string | number;
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>var2 : string | number
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function f2(param1: string | number) {
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>f2 : (param1: string | number) => void
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>param1 : string | number
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// global vars in function declaration
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num = typeof var1 === "string" && var1.length; // string
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>num = typeof var1 === "string" && var1.length : number
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>num : number
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>typeof var1 === "string" && var1.length : number
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>typeof var1 === "string" : boolean
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>typeof var1 : string
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>var1 : string | number
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>"string" : string
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>var1.length : number
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>var1 : string
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>length : number
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// variables from outer function declaration
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num = typeof var2 === "string" && var2.length; // string
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>num = typeof var2 === "string" && var2.length : number
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>num : number
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>typeof var2 === "string" && var2.length : number
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>typeof var2 === "string" : boolean
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>typeof var2 : string
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>var2 : string | number
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>"string" : string
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>var2.length : number
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>var2 : string
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>length : number
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// parameters in outer declaration
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num = typeof param === "string" && param.length; // string
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>num = typeof param === "string" && param.length : number
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>num : number
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>typeof param === "string" && param.length : number
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>typeof param === "string" : boolean
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>typeof param : string
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>param : string | number
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>"string" : string
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>param.length : number
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>param : string
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>length : number
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// local
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var var3: string | number;
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>var3 : string | number
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num = typeof var3 === "string" && var3.length; // string
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>num = typeof var3 === "string" && var3.length : number
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>num : number
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>typeof var3 === "string" && var3.length : number
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>typeof var3 === "string" : boolean
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>typeof var3 : string
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>var3 : string | number
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>"string" : string
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>var3.length : number
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>var3 : string
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>length : number
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num = typeof param1 === "string" && param1.length; // string
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>num = typeof param1 === "string" && param1.length : number
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>num : number
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>typeof param1 === "string" && param1.length : number
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>typeof param1 === "string" : boolean
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>typeof param1 : string
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>param1 : string | number
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>"string" : string
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>param1.length : number
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>param1 : string
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>length : number
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}
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}
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// Function expression
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function f2(param: string | number) {
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>f2 : (param: string | number) => void
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>param : string | number
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// variables in function declaration
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var var2: string | number;
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>var2 : string | number
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// variables in function expressions
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var r = function (param1: string | number) {
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>r : void
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>function (param1: string | number) { // global vars in function declaration num = typeof var1 === "string" && var1.length; // string // variables from outer function declaration num = typeof var2 === "string" && var2.length; // string // parameters in outer declaration num = typeof param === "string" && param.length; // string // local var var3: string | number; num = typeof var3 === "string" && var3.length; // string num = typeof param1 === "string" && param1.length; // string } (param) : void
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>function (param1: string | number) { // global vars in function declaration num = typeof var1 === "string" && var1.length; // string // variables from outer function declaration num = typeof var2 === "string" && var2.length; // string // parameters in outer declaration num = typeof param === "string" && param.length; // string // local var var3: string | number; num = typeof var3 === "string" && var3.length; // string num = typeof param1 === "string" && param1.length; // string } : (param1: string | number) => void
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>param1 : string | number
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// global vars in function declaration
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num = typeof var1 === "string" && var1.length; // string
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>num = typeof var1 === "string" && var1.length : number
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>num : number
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>typeof var1 === "string" && var1.length : number
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>typeof var1 === "string" : boolean
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>typeof var1 : string
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>var1 : string | number
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>"string" : string
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>var1.length : number
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>var1 : string
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>length : number
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// variables from outer function declaration
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num = typeof var2 === "string" && var2.length; // string
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>num = typeof var2 === "string" && var2.length : number
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>num : number
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>typeof var2 === "string" && var2.length : number
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>typeof var2 === "string" : boolean
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>typeof var2 : string
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>var2 : string | number
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>"string" : string
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>var2.length : number
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>var2 : string
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>length : number
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// parameters in outer declaration
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num = typeof param === "string" && param.length; // string
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>num = typeof param === "string" && param.length : number
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>num : number
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>typeof param === "string" && param.length : number
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>typeof param === "string" : boolean
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>typeof param : string
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>param : string | number
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>"string" : string
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>param.length : number
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>param : string
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>length : number
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// local
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var var3: string | number;
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>var3 : string | number
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num = typeof var3 === "string" && var3.length; // string
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>num = typeof var3 === "string" && var3.length : number
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>num : number
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>typeof var3 === "string" && var3.length : number
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>typeof var3 === "string" : boolean
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>typeof var3 : string
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>var3 : string | number
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>"string" : string
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>var3.length : number
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>var3 : string
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>length : number
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num = typeof param1 === "string" && param1.length; // string
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>num = typeof param1 === "string" && param1.length : number
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>num : number
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>typeof param1 === "string" && param1.length : number
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>typeof param1 === "string" : boolean
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>typeof param1 : string
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>param1 : string | number
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>"string" : string
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>param1.length : number
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>param1 : string
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>length : number
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} (param);
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>param : string | number
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}
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// Arrow expression
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function f3(param: string | number) {
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>f3 : (param: string | number) => void
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>param : string | number
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// variables in function declaration
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var var2: string | number;
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>var2 : string | number
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// variables in function expressions
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var r = ((param1: string | number) => {
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>r : void
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>((param1: string | number) => { // global vars in function declaration num = typeof var1 === "string" && var1.length; // string // variables from outer function declaration num = typeof var2 === "string" && var2.length; // string // parameters in outer declaration num = typeof param === "string" && param.length; // string // local var var3: string | number; num = typeof var3 === "string" && var3.length; // string num = typeof param1 === "string" && param1.length; // string })(param) : void
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>((param1: string | number) => { // global vars in function declaration num = typeof var1 === "string" && var1.length; // string // variables from outer function declaration num = typeof var2 === "string" && var2.length; // string // parameters in outer declaration num = typeof param === "string" && param.length; // string // local var var3: string | number; num = typeof var3 === "string" && var3.length; // string num = typeof param1 === "string" && param1.length; // string }) : (param1: string | number) => void
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>(param1: string | number) => { // global vars in function declaration num = typeof var1 === "string" && var1.length; // string // variables from outer function declaration num = typeof var2 === "string" && var2.length; // string // parameters in outer declaration num = typeof param === "string" && param.length; // string // local var var3: string | number; num = typeof var3 === "string" && var3.length; // string num = typeof param1 === "string" && param1.length; // string } : (param1: string | number) => void
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>param1 : string | number
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// global vars in function declaration
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num = typeof var1 === "string" && var1.length; // string
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>num = typeof var1 === "string" && var1.length : number
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>num : number
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>typeof var1 === "string" && var1.length : number
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>typeof var1 === "string" : boolean
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>typeof var1 : string
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>var1 : string | number
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>"string" : string
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>var1.length : number
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>var1 : string
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>length : number
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// variables from outer function declaration
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num = typeof var2 === "string" && var2.length; // string
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>num = typeof var2 === "string" && var2.length : number
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>num : number
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>typeof var2 === "string" && var2.length : number
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>typeof var2 === "string" : boolean
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>typeof var2 : string
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>var2 : string | number
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>"string" : string
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>var2.length : number
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>var2 : string
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>length : number
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// parameters in outer declaration
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num = typeof param === "string" && param.length; // string
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>num = typeof param === "string" && param.length : number
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>num : number
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>typeof param === "string" && param.length : number
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>typeof param === "string" : boolean
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>typeof param : string
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>param : string | number
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>"string" : string
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>param.length : number
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>param : string
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>length : number
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// local
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var var3: string | number;
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>var3 : string | number
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num = typeof var3 === "string" && var3.length; // string
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>num = typeof var3 === "string" && var3.length : number
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>num : number
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>typeof var3 === "string" && var3.length : number
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>typeof var3 === "string" : boolean
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>typeof var3 : string
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>var3 : string | number
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>"string" : string
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>var3.length : number
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>var3 : string
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>length : number
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num = typeof param1 === "string" && param1.length; // string
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>num = typeof param1 === "string" && param1.length : number
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>num : number
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>typeof param1 === "string" && param1.length : number
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>typeof param1 === "string" : boolean
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>typeof param1 : string
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>param1 : string | number
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>"string" : string
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>param1.length : number
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>param1 : string
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>length : number
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})(param);
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>param : string | number
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}
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// Return type of function
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// Inside function declaration
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var strOrNum: string | number;
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>strOrNum : string | number
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function f4() {
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>f4 : () => string | number
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var var2: string | number = strOrNum;
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>var2 : string | number
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>strOrNum : string | number
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return var2;
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>var2 : string | number
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}
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strOrNum = typeof f4() === "string" && f4(); // string | number
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>strOrNum = typeof f4() === "string" && f4() : string | number
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>strOrNum : string | number
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>typeof f4() === "string" && f4() : string | number
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>typeof f4() === "string" : boolean
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>typeof f4() : string
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>f4() : string | number
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>f4 : () => string | number
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>"string" : string
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>f4() : string | number
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>f4 : () => string | number
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