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52 lines
1.3 KiB
52 lines
1.3 KiB
/**
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* An Error base-class that also provides some additional context.
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*
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* All first-party error handlers in Extollo can render the context as part of
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* the display of the error (e.g. in the console, in the HTML response, &c.)
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*
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* @example
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* ```typescript
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* function myFunc(arg1, arg2) {
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* // ...do something...
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* throw new ErrorWithContext('Something went wrong!', { arg1, arg2 })
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* }
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* ```
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*/
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export class ErrorWithContext extends Error {
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public context: {[key: string]: any} = {}
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public originalError?: Error
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constructor(
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message: string,
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context?: {[key: string]: any},
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) {
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super(message)
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if ( context ) {
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this.context = context
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}
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}
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}
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export function withErrorContext<T>(closure: () => T, context: {[key: string]: any}): T {
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try {
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return closure()
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} catch (e: unknown) {
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if ( e instanceof ErrorWithContext ) {
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e.context = {
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...e.context,
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...context,
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}
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throw e
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} else if ( e instanceof Error ) {
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const ewc = new ErrorWithContext(e.message, context)
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ewc.stack = e.stack
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ewc.name = e.name
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ewc.originalError = e
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throw ewc
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} else {
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throw e
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}
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}
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}
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