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=== tests/cases/conformance/expressions/typeGuards/typeGuardsInFunction.ts ===
// Note that type guards affect types of variables and parameters only and
// have no effect on members of objects such as properties.
// variables in global
var num: number;
>num : Symbol(num, Decl(typeGuardsInFunction.ts, 4, 3))
var var1: string | number;
>var1 : Symbol(var1, Decl(typeGuardsInFunction.ts, 5, 3))
// Inside function declaration
function f(param: string | number) {
>f : Symbol(f, Decl(typeGuardsInFunction.ts, 5, 26))
>param : Symbol(param, Decl(typeGuardsInFunction.ts, 7, 11))
// global vars in function declaration
num = typeof var1 === "string" && var1.length; // string
>num : Symbol(num, Decl(typeGuardsInFunction.ts, 4, 3))
>var1 : Symbol(var1, Decl(typeGuardsInFunction.ts, 5, 3))
>var1.length : Symbol(String.length, Decl(lib.es5.d.ts, --, --))
>var1 : Symbol(var1, Decl(typeGuardsInFunction.ts, 5, 3))
>length : Symbol(String.length, Decl(lib.es5.d.ts, --, --))
// variables in function declaration
var var2: string | number;
>var2 : Symbol(var2, Decl(typeGuardsInFunction.ts, 12, 7))
num = typeof var2 === "string" && var2.length; // string
>num : Symbol(num, Decl(typeGuardsInFunction.ts, 4, 3))
>var2 : Symbol(var2, Decl(typeGuardsInFunction.ts, 12, 7))
>var2.length : Symbol(String.length, Decl(lib.es5.d.ts, --, --))
>var2 : Symbol(var2, Decl(typeGuardsInFunction.ts, 12, 7))
>length : Symbol(String.length, Decl(lib.es5.d.ts, --, --))
// parameters in function declaration
num = typeof param === "string" && param.length; // string
>num : Symbol(num, Decl(typeGuardsInFunction.ts, 4, 3))
>param : Symbol(param, Decl(typeGuardsInFunction.ts, 7, 11))
>param.length : Symbol(String.length, Decl(lib.es5.d.ts, --, --))
>param : Symbol(param, Decl(typeGuardsInFunction.ts, 7, 11))
>length : Symbol(String.length, Decl(lib.es5.d.ts, --, --))
}
// local function declaration
function f1(param: string | number) {
>f1 : Symbol(f1, Decl(typeGuardsInFunction.ts, 17, 1))
>param : Symbol(param, Decl(typeGuardsInFunction.ts, 19, 12))
var var2: string | number;
>var2 : Symbol(var2, Decl(typeGuardsInFunction.ts, 20, 7))
function f2(param1: string | number) {
>f2 : Symbol(f2, Decl(typeGuardsInFunction.ts, 20, 30))
>param1 : Symbol(param1, Decl(typeGuardsInFunction.ts, 21, 16))
// global vars in function declaration
num = typeof var1 === "string" && var1.length; // string
>num : Symbol(num, Decl(typeGuardsInFunction.ts, 4, 3))
>var1 : Symbol(var1, Decl(typeGuardsInFunction.ts, 5, 3))
>var1.length : Symbol(String.length, Decl(lib.es5.d.ts, --, --))
>var1 : Symbol(var1, Decl(typeGuardsInFunction.ts, 5, 3))
>length : Symbol(String.length, Decl(lib.es5.d.ts, --, --))
// variables from outer function declaration
num = typeof var2 === "string" && var2.length; // string
>num : Symbol(num, Decl(typeGuardsInFunction.ts, 4, 3))
>var2 : Symbol(var2, Decl(typeGuardsInFunction.ts, 20, 7))
>var2.length : Symbol(String.length, Decl(lib.es5.d.ts, --, --))
>var2 : Symbol(var2, Decl(typeGuardsInFunction.ts, 20, 7))
>length : Symbol(String.length, Decl(lib.es5.d.ts, --, --))
// parameters in outer declaration
num = typeof param === "string" && param.length; // string
>num : Symbol(num, Decl(typeGuardsInFunction.ts, 4, 3))
>param : Symbol(param, Decl(typeGuardsInFunction.ts, 19, 12))
>param.length : Symbol(String.length, Decl(lib.es5.d.ts, --, --))
>param : Symbol(param, Decl(typeGuardsInFunction.ts, 19, 12))
>length : Symbol(String.length, Decl(lib.es5.d.ts, --, --))
// local
var var3: string | number;
>var3 : Symbol(var3, Decl(typeGuardsInFunction.ts, 32, 11))
num = typeof var3 === "string" && var3.length; // string
>num : Symbol(num, Decl(typeGuardsInFunction.ts, 4, 3))
>var3 : Symbol(var3, Decl(typeGuardsInFunction.ts, 32, 11))
>var3.length : Symbol(String.length, Decl(lib.es5.d.ts, --, --))
>var3 : Symbol(var3, Decl(typeGuardsInFunction.ts, 32, 11))
>length : Symbol(String.length, Decl(lib.es5.d.ts, --, --))
num = typeof param1 === "string" && param1.length; // string
>num : Symbol(num, Decl(typeGuardsInFunction.ts, 4, 3))
>param1 : Symbol(param1, Decl(typeGuardsInFunction.ts, 21, 16))
>param1.length : Symbol(String.length, Decl(lib.es5.d.ts, --, --))
>param1 : Symbol(param1, Decl(typeGuardsInFunction.ts, 21, 16))
>length : Symbol(String.length, Decl(lib.es5.d.ts, --, --))
}
}
// Function expression
function f2(param: string | number) {
>f2 : Symbol(f2, Decl(typeGuardsInFunction.ts, 36, 1))
>param : Symbol(param, Decl(typeGuardsInFunction.ts, 38, 12))
// variables in function declaration
var var2: string | number;
>var2 : Symbol(var2, Decl(typeGuardsInFunction.ts, 40, 7))
// variables in function expressions
var r = function (param1: string | number) {
>r : Symbol(r, Decl(typeGuardsInFunction.ts, 42, 7))
>param1 : Symbol(param1, Decl(typeGuardsInFunction.ts, 42, 22))
// global vars in function declaration
num = typeof var1 === "string" && var1.length; // string
>num : Symbol(num, Decl(typeGuardsInFunction.ts, 4, 3))
>var1 : Symbol(var1, Decl(typeGuardsInFunction.ts, 5, 3))
>var1.length : Symbol(String.length, Decl(lib.es5.d.ts, --, --))
>var1 : Symbol(var1, Decl(typeGuardsInFunction.ts, 5, 3))
>length : Symbol(String.length, Decl(lib.es5.d.ts, --, --))
// variables from outer function declaration
num = typeof var2 === "string" && var2.length; // string
>num : Symbol(num, Decl(typeGuardsInFunction.ts, 4, 3))
>var2 : Symbol(var2, Decl(typeGuardsInFunction.ts, 40, 7))
>var2.length : Symbol(String.length, Decl(lib.es5.d.ts, --, --))
>var2 : Symbol(var2, Decl(typeGuardsInFunction.ts, 40, 7))
>length : Symbol(String.length, Decl(lib.es5.d.ts, --, --))
// parameters in outer declaration
num = typeof param === "string" && param.length; // string
>num : Symbol(num, Decl(typeGuardsInFunction.ts, 4, 3))
>param : Symbol(param, Decl(typeGuardsInFunction.ts, 38, 12))
>param.length : Symbol(String.length, Decl(lib.es5.d.ts, --, --))
>param : Symbol(param, Decl(typeGuardsInFunction.ts, 38, 12))
>length : Symbol(String.length, Decl(lib.es5.d.ts, --, --))
// local
var var3: string | number;
>var3 : Symbol(var3, Decl(typeGuardsInFunction.ts, 53, 11))
num = typeof var3 === "string" && var3.length; // string
>num : Symbol(num, Decl(typeGuardsInFunction.ts, 4, 3))
>var3 : Symbol(var3, Decl(typeGuardsInFunction.ts, 53, 11))
>var3.length : Symbol(String.length, Decl(lib.es5.d.ts, --, --))
>var3 : Symbol(var3, Decl(typeGuardsInFunction.ts, 53, 11))
>length : Symbol(String.length, Decl(lib.es5.d.ts, --, --))
num = typeof param1 === "string" && param1.length; // string
>num : Symbol(num, Decl(typeGuardsInFunction.ts, 4, 3))
>param1 : Symbol(param1, Decl(typeGuardsInFunction.ts, 42, 22))
>param1.length : Symbol(String.length, Decl(lib.es5.d.ts, --, --))
>param1 : Symbol(param1, Decl(typeGuardsInFunction.ts, 42, 22))
>length : Symbol(String.length, Decl(lib.es5.d.ts, --, --))
} (param);
>param : Symbol(param, Decl(typeGuardsInFunction.ts, 38, 12))
}
// Arrow expression
function f3(param: string | number) {
>f3 : Symbol(f3, Decl(typeGuardsInFunction.ts, 57, 1))
>param : Symbol(param, Decl(typeGuardsInFunction.ts, 59, 12))
// variables in function declaration
var var2: string | number;
>var2 : Symbol(var2, Decl(typeGuardsInFunction.ts, 61, 7))
// variables in function expressions
var r = ((param1: string | number) => {
>r : Symbol(r, Decl(typeGuardsInFunction.ts, 63, 7))
>param1 : Symbol(param1, Decl(typeGuardsInFunction.ts, 63, 14))
// global vars in function declaration
num = typeof var1 === "string" && var1.length; // string
>num : Symbol(num, Decl(typeGuardsInFunction.ts, 4, 3))
>var1 : Symbol(var1, Decl(typeGuardsInFunction.ts, 5, 3))
>var1.length : Symbol(String.length, Decl(lib.es5.d.ts, --, --))
>var1 : Symbol(var1, Decl(typeGuardsInFunction.ts, 5, 3))
>length : Symbol(String.length, Decl(lib.es5.d.ts, --, --))
// variables from outer function declaration
num = typeof var2 === "string" && var2.length; // string
>num : Symbol(num, Decl(typeGuardsInFunction.ts, 4, 3))
>var2 : Symbol(var2, Decl(typeGuardsInFunction.ts, 61, 7))
>var2.length : Symbol(String.length, Decl(lib.es5.d.ts, --, --))
>var2 : Symbol(var2, Decl(typeGuardsInFunction.ts, 61, 7))
>length : Symbol(String.length, Decl(lib.es5.d.ts, --, --))
// parameters in outer declaration
num = typeof param === "string" && param.length; // string
>num : Symbol(num, Decl(typeGuardsInFunction.ts, 4, 3))
>param : Symbol(param, Decl(typeGuardsInFunction.ts, 59, 12))
>param.length : Symbol(String.length, Decl(lib.es5.d.ts, --, --))
>param : Symbol(param, Decl(typeGuardsInFunction.ts, 59, 12))
>length : Symbol(String.length, Decl(lib.es5.d.ts, --, --))
// local
var var3: string | number;
>var3 : Symbol(var3, Decl(typeGuardsInFunction.ts, 74, 11))
num = typeof var3 === "string" && var3.length; // string
>num : Symbol(num, Decl(typeGuardsInFunction.ts, 4, 3))
>var3 : Symbol(var3, Decl(typeGuardsInFunction.ts, 74, 11))
>var3.length : Symbol(String.length, Decl(lib.es5.d.ts, --, --))
>var3 : Symbol(var3, Decl(typeGuardsInFunction.ts, 74, 11))
>length : Symbol(String.length, Decl(lib.es5.d.ts, --, --))
num = typeof param1 === "string" && param1.length; // string
>num : Symbol(num, Decl(typeGuardsInFunction.ts, 4, 3))
>param1 : Symbol(param1, Decl(typeGuardsInFunction.ts, 63, 14))
>param1.length : Symbol(String.length, Decl(lib.es5.d.ts, --, --))
>param1 : Symbol(param1, Decl(typeGuardsInFunction.ts, 63, 14))
>length : Symbol(String.length, Decl(lib.es5.d.ts, --, --))
})(param);
>param : Symbol(param, Decl(typeGuardsInFunction.ts, 59, 12))
}
// Return type of function
// Inside function declaration
var strOrNum: string | number;
>strOrNum : Symbol(strOrNum, Decl(typeGuardsInFunction.ts, 81, 3))
function f4() {
>f4 : Symbol(f4, Decl(typeGuardsInFunction.ts, 81, 30))
var var2: string | number = strOrNum;
>var2 : Symbol(var2, Decl(typeGuardsInFunction.ts, 83, 7))
>strOrNum : Symbol(strOrNum, Decl(typeGuardsInFunction.ts, 81, 3))
return var2;
>var2 : Symbol(var2, Decl(typeGuardsInFunction.ts, 83, 7))
}
strOrNum = typeof f4() === "string" && f4(); // string | number
>strOrNum : Symbol(strOrNum, Decl(typeGuardsInFunction.ts, 81, 3))
>f4 : Symbol(f4, Decl(typeGuardsInFunction.ts, 81, 30))
>f4 : Symbol(f4, Decl(typeGuardsInFunction.ts, 81, 30))
|
