Danny Kim
13 lines
480 B
TypeScript
13 lines
480 B
TypeScript
// Type guards for values read from JSON, which arrive as `unknown`.
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export type JsonObject = NodeJS.Dict<unknown>;
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// Any non-null object, arrays included: reading a missing key yields undefined.
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export function isObject(value: unknown): value is JsonObject {
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return typeof value === "object" && value !== null;
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}
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// A plain mapping, which an array is not.
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export function isMapping(value: unknown): value is JsonObject {
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return isObject(value) && !Array.isArray(value);
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}
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