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//// [switchCaseNarrowsMatchingClausesEvenWhenNonMatchingClausesExist.ts]
export const narrowToLiterals = (str: string) => {
switch (str) {
case 'abc': {
// inferred type as `abc`
return str;
}
default:
return 'defaultValue';
}
};
export const narrowToString = (str: string, someOtherStr: string) => {
switch (str) {
case 'abc': {
// inferred type should be `abc`
return str;
}
case someOtherStr: {
// `string`
return str;
}
default:
return 'defaultValue';
}
};
export const narrowToStringOrNumber = (str: string | number, someNumber: number) => {
switch (str) {
case 'abc': {
// inferred type should be `abc`
return str;
}
case someNumber: {
// inferred type should be `number`
return str;
}
default:
return 'defaultValue';
}
};
//// [switchCaseNarrowsMatchingClausesEvenWhenNonMatchingClausesExist.js]
"use strict";
exports.__esModule = true;
exports.narrowToLiterals = function (str) {
switch (str) {
case 'abc': {
// inferred type as `abc`
return str;
}
default:
return 'defaultValue';
}
};
exports.narrowToString = function (str, someOtherStr) {
switch (str) {
case 'abc': {
// inferred type should be `abc`
return str;
}
case someOtherStr: {
// `string`
return str;
}
default:
return 'defaultValue';
}
};
exports.narrowToStringOrNumber = function (str, someNumber) {
switch (str) {
case 'abc': {
// inferred type should be `abc`
return str;
}
case someNumber: {
// inferred type should be `number`
return str;
}
default:
return 'defaultValue';
}
};
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