Ivan RukhavetsandGithub Actions
1af44b4264
* Add validation to text inputs (#56) * [CI Skip] 0.24.0-beta.3 skip-checks: true * Change imports * Refactor ValidatedInput.tsx to stop cloning elements * Fix linter * Fix lint Co-authored-by: Github Actions <action@github.com>
51 lines
1.5 KiB
TypeScript
51 lines
1.5 KiB
TypeScript
// Copyright 2019 @polkadot/extension-ui authors & contributors
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// This software may be modified and distributed under the terms
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// of the Apache-2.0 license. See the LICENSE file for details.
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interface InputError {
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errorDescription: string;
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}
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export type Result<T> = { error: InputError } | { ok: T }
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export const Result = {
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error: <T>(errorDescription: string): Result<T> => ({ error: { errorDescription } }),
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isError<T> (value: Result<T>): value is ({ error: InputError }) {
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return Object.hasOwnProperty.call(value, 'error');
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},
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isOk<T> (value: Result<T>): value is ({ ok: T }) {
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return Object.hasOwnProperty.call(value, 'ok');
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},
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ok: <T>(ok: T): Result<T> => ({ ok })
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};
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export declare type Validator<T> = (value: T) => Result<T> | Promise<Result<T>>;
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export const allOf = <T>(...validators: Validator<T>[]): Validator<T> => async (value: T): Promise<Result<T>> => {
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for (const validator of validators) {
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const validationResult = await validator(value);
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if (Result.isError(validationResult)) {
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return validationResult;
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}
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}
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return Result.ok(value);
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};
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export const isNotShorterThan = (minLength: number, errorText: string): Validator<string> =>
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(value: string): Result<string> => {
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if (value.length < minLength) {
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return Result.error(errorText);
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}
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return Result.ok(value);
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};
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export const isSameAs = <T>(expectedValue: T, errorText: string): Validator<T> => (value: T): Result<T> => {
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if (value !== expectedValue) {
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return Result.error(errorText);
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}
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return Result.ok(value);
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};
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