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Add .nonEmptyStringAndNotWhitespace() (#161)

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Co-authored-by: Sindre Sorhus <sindresorhus@gmail.com>
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Ivan Katliarchuk 2022-02-25 09:10:57 +00:00 • committed by GitHub
parent 04ccf21dba
commit 23cf074a73
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6
source/index.ts
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@ -350,6 +350,9 @@ is.nonEmptyString = (value: unknown): value is string => is.string(value) && val
const isWhiteSpaceString = (value: unknown): value is string => is.string(value) && !/\S/.test(value);
is.emptyStringOrWhitespace = (value: unknown): value is string => is.emptyString(value) || isWhiteSpaceString(value);
// TODO: Use `not ''` when the `not` operator is available.
is.nonEmptyStringAndNotWhitespace = (value: unknown): value is string => is.string(value) && !is.emptyStringOrWhitespace(value);
is.emptyObject = <Key extends keyof any = string>(value: unknown): value is Record<Key, never> => is.object(value) && !is.map(value) && !is.set(value) && Object.keys(value).length === 0;
// TODO: Use `not` operator here to remove `Map` and `Set` from type guard:
@ -433,6 +436,7 @@ export const enum AssertionTypeDescription {
emptyString = 'empty string',
nonEmptyString = 'non-empty string',
emptyStringOrWhitespace = 'empty string or whitespace',
nonEmptyStringAndNotWhitespace = 'non-empty string and not whitespace',
emptyObject = 'empty object',
nonEmptyObject = 'non-empty object',
emptySet = 'empty set',
@ -522,6 +526,7 @@ interface Assert {
emptyString: (value: unknown) => asserts value is '';
nonEmptyString: (value: unknown) => asserts value is string;
emptyStringOrWhitespace: (value: unknown) => asserts value is string;
nonEmptyStringAndNotWhitespace: (value: unknown) => asserts value is string;
emptyObject: <Key extends keyof any = string>(value: unknown) => asserts value is Record<Key, never>;
nonEmptyObject: <Key extends keyof any = string, Value = unknown>(value: unknown) => asserts value is Record<Key, Value>;
emptySet: (value: unknown) => asserts value is Set<never>;
@ -623,6 +628,7 @@ export const assert: Assert = {
emptyString: (value: unknown): asserts value is '' => assertType(is.emptyString(value), AssertionTypeDescription.emptyString, value),
nonEmptyString: (value: unknown): asserts value is string => assertType(is.nonEmptyString(value), AssertionTypeDescription.nonEmptyString, value),
emptyStringOrWhitespace: (value: unknown): asserts value is string => assertType(is.emptyStringOrWhitespace(value), AssertionTypeDescription.emptyStringOrWhitespace, value),
nonEmptyStringAndNotWhitespace: (value: unknown): asserts value is string => assertType(is.nonEmptyStringAndNotWhitespace(value), AssertionTypeDescription.nonEmptyStringAndNotWhitespace, value),
emptyObject: <Key extends keyof any = string>(value: unknown): asserts value is Record<Key, never> => assertType(is.emptyObject(value), AssertionTypeDescription.emptyObject, value),
nonEmptyObject: <Key extends keyof any = string, Value = unknown>(value: unknown): asserts value is Record<Key, Value> => assertType(is.nonEmptyObject(value), AssertionTypeDescription.nonEmptyObject, value),
emptySet: (value: unknown): asserts value is Set<never> => assertType(is.emptySet(value), AssertionTypeDescription.emptySet, value),