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48 lines
1.2 KiB
TypeScript
48 lines
1.2 KiB
TypeScript
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export function isArray(value: unknown): boolean {
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return Array.isArray(value);
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}
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export function isBoolean(value: unknown): boolean {
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return typeof value === "boolean" || value instanceof Boolean;
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}
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export function isNull(value: unknown): boolean {
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return value === null;
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}
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export function isNullOrUndefined(value: unknown): boolean {
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return value === null || value === undefined;
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}
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export function isNumber(value: unknown): boolean {
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return typeof value === "number" || value instanceof Number;
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}
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export function isString(value: unknown): boolean {
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return typeof value === "string" || value instanceof String;
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}
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export function isSymbol(value: unknown): boolean {
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return typeof value === "symbol";
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}
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export function isUndefined(value: unknown): boolean {
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return value === undefined;
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}
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export function isObject(value: unknown): boolean {
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return value !== null && typeof value === "object";
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}
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export function isError(e: unknown): boolean {
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return e instanceof Error;
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}
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export function isFunction(value: unknown): boolean {
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return typeof value === "function";
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}
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export function isRegExp(value: unknown): boolean {
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return value instanceof RegExp;
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}
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