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//// [useUnknownInCatchVariables01.ts]
try {
// ...
}
catch (e) {
// error!
void e.toUpperCase();
void e++;
void e();
if (typeof e === "string") {
// works!
// We've narrowed 'e' down to the type 'string'.
console.log(e.toUpperCase());
}
if (e instanceof Error) {
e.stack?.toUpperCase();
}
if (typeof e === "number") {
e.toExponential();
e++;
}
}
try {
// ...
}
catch (e: any) {
// All are allowed.
void e.toUpperCase();
void e.toExponential();
void e();
}
//// [useUnknownInCatchVariables01.js]
var _a;
try {
// ...
}
catch (e) {
// error!
void e.toUpperCase();
void e++;
void e();
if (typeof e === "string") {
// works!
// We've narrowed 'e' down to the type 'string'.
console.log(e.toUpperCase());
}
if (e instanceof Error) {
(_a = e.stack) === null || _a === void 0 ? void 0 : _a.toUpperCase();
}
if (typeof e === "number") {
e.toExponential();
e++;
}
}
try {
// ...
}
catch (e) {
// All are allowed.
void e.toUpperCase();
void e.toExponential();
void e();
}
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