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29 lines
932 B
TypeScript
29 lines
932 B
TypeScript
/**
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* Determines if the value provided to the function is an object type that
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* is not null.
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*/
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function isObject(val: unknown): val is Record<string, unknown> {
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return typeof val === 'object' && val !== null && !Array.isArray(val);
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}
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/**
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* Determines if an object is truly empty by looking at the keys present
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* and the prototype value.
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*/
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// eslint-disable-next-line @typescript-eslint/ban-types
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function isEmptyObject(val: {}): boolean {
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return Object.keys(val).length === 0 && Object.getPrototypeOf(val) === Object.prototype;
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}
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/**
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* A helper function for use in TypeScript that returns all of the keys
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* for an object, but in a typed manner to make working with them a little
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* easier.
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*/
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// eslint-disable-next-line @typescript-eslint/ban-types
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function getObjectKeys<T extends {}>(o: T): (keyof T)[] {
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return Object.keys(o) as (keyof typeof o)[];
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}
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export { isObject, isEmptyObject, getObjectKeys };
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