21 lines
789 B
Plaintext
21 lines
789 B
Plaintext
/**
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* Used to create Error subclasses until the community moves away from ES5.
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*
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* This is because compiling from TypeScript down to ES5 has issues with subclassing Errors
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* as well as other built-in types: https://github.com/Microsoft/TypeScript/issues/12123
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*
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* @param createImpl A factory function to create the actual constructor implementation. The returned
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* function should be a named function that calls `_super` internally.
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*/
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export function createErrorClass<T>(createImpl: (_super: any) => any): T {
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const _super = (instance: any) => {
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Error.call(instance);
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instance.stack = new Error().stack;
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};
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const ctorFunc = createImpl(_super);
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ctorFunc.prototype = Object.create(Error.prototype);
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ctorFunc.prototype.constructor = ctorFunc;
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return ctorFunc;
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}
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