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Improve is.plainObject TypeScript type (#126)

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Rocktim Saikia 2020-10-13 03:30:52 +05:30 • committed by GitHub
parent bf6bba7af8
commit 94749dbb2e
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1 changed files with 4 additions and 3 deletions
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source/index.ts
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@ -260,7 +260,8 @@ is.primitive = (value: unknown): value is Primitive => is.null_(value) || isPrim
is.integer = (value: unknown): value is number => Number.isInteger(value as number);
is.safeInteger = (value: unknown): value is number => Number.isSafeInteger(value as number);
is.plainObject = <Value = unknown>(value: unknown): value is Record<string, Value> => {
type ObjectKey = string | number | symbol;
is.plainObject = <Value = unknown>(value: unknown): value is Record<ObjectKey, Value> => {
// From: https://github.com/sindresorhus/is-plain-obj/blob/master/index.js
if (toString.call(value) !== '[object Object]') {
return false;
@ -494,7 +495,7 @@ interface Assert {
primitive: (value: unknown) => asserts value is Primitive;
integer: (value: unknown) => asserts value is number;
safeInteger: (value: unknown) => asserts value is number;
plainObject: <Value = unknown>(value: unknown) => asserts value is Record<string, Value>;
plainObject: <Value = unknown>(value: unknown) => asserts value is Record<ObjectKey, Value>;
typedArray: (value: unknown) => asserts value is TypedArray;
arrayLike: <T = unknown>(value: unknown) => asserts value is ArrayLike<T>;
domElement: (value: unknown) => asserts value is HTMLElement;
@ -591,7 +592,7 @@ export const assert: Assert = {
primitive: (value: unknown): asserts value is Primitive => assertType(is.primitive(value), AssertionTypeDescription.primitive, value),
integer: (value: unknown): asserts value is number => assertType(is.integer(value), AssertionTypeDescription.integer, value),
safeInteger: (value: unknown): asserts value is number => assertType(is.safeInteger(value), AssertionTypeDescription.safeInteger, value),
plainObject: <Value = unknown>(value: unknown): asserts value is Record<string, Value> => assertType(is.plainObject(value), AssertionTypeDescription.plainObject, value),
plainObject: <Value = unknown>(value: unknown): asserts value is Record<ObjectKey, Value> => assertType(is.plainObject(value), AssertionTypeDescription.plainObject, value),
typedArray: (value: unknown): asserts value is TypedArray => assertType(is.typedArray(value), AssertionTypeDescription.typedArray, value),
arrayLike: <T = unknown>(value: unknown): asserts value is ArrayLike<T> => assertType(is.arrayLike(value), AssertionTypeDescription.arrayLike, value),
domElement: (value: unknown): asserts value is HTMLElement => assertType(is.domElement(value), AssertionTypeDescription.domElement, value),