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=== tests/cases/conformance/expressions/typeGuards/typeGuardOfFormTypeOfBoolean.ts ===
class C { private p: string };
>C : C
>p : string
var str: string;
>str : string
var bool: boolean;
>bool : boolean
var num: number;
>num : number
var strOrNum: string | number;
>strOrNum : string | number
var strOrBool: string | boolean;
>strOrBool : string | boolean
var numOrBool: number | boolean
>numOrBool : number | boolean
var strOrNumOrBool: string | number | boolean;
>strOrNumOrBool : string | number | boolean
var strOrC: string | C;
>strOrC : string | C
var numOrC: number | C;
>numOrC : number | C
var boolOrC: boolean | C;
>boolOrC : boolean | C
var c: C;
>c : C
// A type guard of the form typeof x === s,
// where s is a string literal with the value 'string', 'number', or 'boolean',
// - when true, narrows the type of x to the given primitive type, or
// - when false, removes the primitive type from the type of x.
if (typeof strOrBool === "boolean") {
>typeof strOrBool === "boolean" : boolean
>typeof strOrBool : "string" | "number" | "bigint" | "boolean" | "symbol" | "undefined" | "object" | "function"
>strOrBool : string | boolean
>"boolean" : "boolean"
bool = strOrBool; // boolean
>bool = strOrBool : boolean
>bool : boolean
>strOrBool : boolean
}
else {
str = strOrBool; // string
>str = strOrBool : string
>str : string
>strOrBool : string
}
if (typeof numOrBool === "boolean") {
>typeof numOrBool === "boolean" : boolean
>typeof numOrBool : "string" | "number" | "bigint" | "boolean" | "symbol" | "undefined" | "object" | "function"
>numOrBool : number | boolean
>"boolean" : "boolean"
bool = numOrBool; // boolean
>bool = numOrBool : boolean
>bool : boolean
>numOrBool : boolean
}
else {
num = numOrBool; // number
>num = numOrBool : number
>num : number
>numOrBool : number
}
if (typeof strOrNumOrBool === "boolean") {
>typeof strOrNumOrBool === "boolean" : boolean
>typeof strOrNumOrBool : "string" | "number" | "bigint" | "boolean" | "symbol" | "undefined" | "object" | "function"
>strOrNumOrBool : string | number | boolean
>"boolean" : "boolean"
bool = strOrNumOrBool; // boolean
>bool = strOrNumOrBool : boolean
>bool : boolean
>strOrNumOrBool : boolean
}
else {
strOrNum = strOrNumOrBool; // string | number
>strOrNum = strOrNumOrBool : string | number
>strOrNum : string | number
>strOrNumOrBool : string | number
}
if (typeof boolOrC === "boolean") {
>typeof boolOrC === "boolean" : boolean
>typeof boolOrC : "string" | "number" | "bigint" | "boolean" | "symbol" | "undefined" | "object" | "function"
>boolOrC : boolean | C
>"boolean" : "boolean"
bool = boolOrC; // boolean
>bool = boolOrC : boolean
>bool : boolean
>boolOrC : boolean
}
else {
c = boolOrC; // C
>c = boolOrC : C
>c : C
>boolOrC : C
}
if (typeof strOrNum === "boolean") {
>typeof strOrNum === "boolean" : boolean
>typeof strOrNum : "string" | "number" | "bigint" | "boolean" | "symbol" | "undefined" | "object" | "function"
>strOrNum : string | number
>"boolean" : "boolean"
let z1: {} = strOrNum; // {}
>z1 : {}
>strOrNum : never
}
else {
let z2: string | number = strOrNum; // string | number
>z2 : string | number
>strOrNum : string | number
}
// A type guard of the form typeof x !== s, where s is a string literal,
// - when true, narrows the type of x by typeof x === s when false, or
// - when false, narrows the type of x by typeof x === s when true.
if (typeof strOrBool !== "boolean") {
>typeof strOrBool !== "boolean" : boolean
>typeof strOrBool : "string" | "number" | "bigint" | "boolean" | "symbol" | "undefined" | "object" | "function"
>strOrBool : string | boolean
>"boolean" : "boolean"
str = strOrBool; // string
>str = strOrBool : string
>str : string
>strOrBool : string
}
else {
bool = strOrBool; // boolean
>bool = strOrBool : boolean
>bool : boolean
>strOrBool : boolean
}
if (typeof numOrBool !== "boolean") {
>typeof numOrBool !== "boolean" : boolean
>typeof numOrBool : "string" | "number" | "bigint" | "boolean" | "symbol" | "undefined" | "object" | "function"
>numOrBool : number | boolean
>"boolean" : "boolean"
num = numOrBool; // number
>num = numOrBool : number
>num : number
>numOrBool : number
}
else {
bool = numOrBool; // boolean
>bool = numOrBool : boolean
>bool : boolean
>numOrBool : boolean
}
if (typeof strOrNumOrBool !== "boolean") {
>typeof strOrNumOrBool !== "boolean" : boolean
>typeof strOrNumOrBool : "string" | "number" | "bigint" | "boolean" | "symbol" | "undefined" | "object" | "function"
>strOrNumOrBool : string | number | boolean
>"boolean" : "boolean"
strOrNum = strOrNumOrBool; // string | number
>strOrNum = strOrNumOrBool : string | number
>strOrNum : string | number
>strOrNumOrBool : string | number
}
else {
bool = strOrNumOrBool; // boolean
>bool = strOrNumOrBool : boolean
>bool : boolean
>strOrNumOrBool : boolean
}
if (typeof boolOrC !== "boolean") {
>typeof boolOrC !== "boolean" : boolean
>typeof boolOrC : "string" | "number" | "bigint" | "boolean" | "symbol" | "undefined" | "object" | "function"
>boolOrC : boolean | C
>"boolean" : "boolean"
c = boolOrC; // C
>c = boolOrC : C
>c : C
>boolOrC : C
}
else {
bool = boolOrC; // boolean
>bool = boolOrC : boolean
>bool : boolean
>boolOrC : boolean
}
if (typeof strOrNum !== "boolean") {
>typeof strOrNum !== "boolean" : boolean
>typeof strOrNum : "string" | "number" | "bigint" | "boolean" | "symbol" | "undefined" | "object" | "function"
>strOrNum : string | number
>"boolean" : "boolean"
let z1: string | number = strOrNum; // string | number
>z1 : string | number
>strOrNum : string | number
}
else {
let z2: {} = strOrNum; // {}
>z2 : {}
>strOrNum : never
}
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