37 lines
1.3 KiB
JavaScript
37 lines
1.3 KiB
JavaScript
export const is = {
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match: (testFn, message = '') => (value, fieldValues) => !testFn(value, fieldValues) && message,
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required: () => value => isNilOrEmptyString(value) && 'This field is required',
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minLength: min => value => !!value && value.length < min && `Must be at least ${min} characters`,
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maxLength: max => value => !!value && value.length > max && `Must be at most ${max} characters`,
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notEmptyArray: () => value =>
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Array.isArray(value) && value.length === 0 && 'Please add at least one item',
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email: () => value => !!value && !/.+@.+\..+/.test(value) && 'Must be a valid email',
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url: () => value =>
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!!value &&
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// eslint-disable-next-line no-useless-escape
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!/^(?:http(s)?:\/\/)?[\w.-]+(?:\.[\w\.-]+)+[\w\-\._~:/?#[\]@!\$&'\(\)\*\+,;=.]+$/.test(value) &&
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'Must be a valid URL',
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};
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const isNilOrEmptyString = value => value === undefined || value === null || value === '';
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export const generateErrors = (fieldValues, fieldValidators) => {
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const errors = {};
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Object.entries(fieldValidators).forEach(([fieldName, validators]) => {
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[validators].flat().forEach(validator => {
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const errorMessage = validator(fieldValues[fieldName], fieldValues);
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if (errorMessage && !errors[fieldName]) {
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errors[fieldName] = errorMessage;
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}
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});
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});
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return errors;
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};
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