9906092db2
* Add test case for 'useUnknownInCatchVariables'. * Add new 'useUnknownInCatchVariables' flag. * Accepted baselines. * Add test for catch variable explicitly typed as 'any'. * Accepted baselines. * Move option under 'strict'. * Accepted baselines. * 'useUnknownInCatchVariables' is strict in command line help.
102 lines
2.1 KiB
Plaintext
102 lines
2.1 KiB
Plaintext
=== tests/cases/compiler/useUnknownInCatchVariables01.ts ===
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try {
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// ...
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}
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catch (e) {
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>e : unknown
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// error!
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void e.toUpperCase();
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>void e.toUpperCase() : undefined
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>e.toUpperCase() : any
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>e.toUpperCase : any
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>e : unknown
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>toUpperCase : any
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void e++;
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>void e++ : undefined
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>e++ : number
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>e : unknown
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void e();
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>void e() : undefined
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>e() : any
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>e : unknown
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if (typeof e === "string") {
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>typeof e === "string" : boolean
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>typeof e : "string" | "number" | "bigint" | "boolean" | "symbol" | "undefined" | "object" | "function"
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>e : unknown
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>"string" : "string"
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// works!
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// We've narrowed 'e' down to the type 'string'.
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console.log(e.toUpperCase());
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>console.log(e.toUpperCase()) : void
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>console.log : (...data: any[]) => void
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>console : Console
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>log : (...data: any[]) => void
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>e.toUpperCase() : string
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>e.toUpperCase : () => string
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>e : string
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>toUpperCase : () => string
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}
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if (e instanceof Error) {
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>e instanceof Error : boolean
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>e : unknown
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>Error : ErrorConstructor
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e.stack?.toUpperCase();
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>e.stack?.toUpperCase() : string
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>e.stack?.toUpperCase : () => string
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>e.stack : string
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>e : Error
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>stack : string
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>toUpperCase : () => string
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}
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if (typeof e === "number") {
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>typeof e === "number" : boolean
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>typeof e : "string" | "number" | "bigint" | "boolean" | "symbol" | "undefined" | "object" | "function"
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>e : unknown
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>"number" : "number"
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e.toExponential();
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>e.toExponential() : string
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>e.toExponential : (fractionDigits?: number) => string
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>e : number
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>toExponential : (fractionDigits?: number) => string
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e++;
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>e++ : number
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>e : number
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}
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}
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try {
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// ...
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}
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catch (e: any) {
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>e : any
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// All are allowed.
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void e.toUpperCase();
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>void e.toUpperCase() : undefined
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>e.toUpperCase() : any
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>e.toUpperCase : any
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>e : any
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>toUpperCase : any
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void e.toExponential();
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>void e.toExponential() : undefined
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>e.toExponential() : any
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>e.toExponential : any
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>e : any
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>toExponential : any
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void e();
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>void e() : undefined
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>e() : any
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>e : any
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}
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