Useful proptypes for React components. Developed for and tested on ClassDojo's web app.

This module exports a set of proptype validators.

import ExtendedPropTypes from "extended-proptypes";

class MyComponent extends Component {

  static propTypes = {
    myDate: ExtendedPropTypes.date.isRequired,
    mySatanicString: ExtendedPropTypes.stringMatching(/^6+$/).isRequired,
  };
}

If you only need a few of the provided functions, individual validators can be imported under /lib/validators.

import keyedObject from "extended-proptypes/lib/validators/keyedObject";

class MyComponent extends Component {

  static propTypes = {
    mySpecialObject: keyedObject(/keyregex/).isRequired,
  };
}

It may be convenient to not have to reference both the original proptypes object and also this one. To resolve this, you can use one of two methods:

• extended-proptypes/lib/extend-from-react imports {PropTypes} from react and adds all of its methods to this module's export.
• extended-proptypes/lib/extend-from-standalone imports PropTypes from prop-types and adds all of its methods to this module's export.

import `extended-proptypes/lib/extend-from-react`;
import PropTypes from "extended-proptypes";

class MyComponent extends Component {

  static propTypes = {
    myEmailAddress: PropTypes.emailAddress.isRequired,
    myArrayOrObject: PropTypes.collectionOf(PropTypes.bool),
  };
}

When NODE_ENV === "production", since React will not validate PropTypes, this method exports stubbed versions of each validator.

All validators expose basic and isRequired versions.

• elementWithType(Type): A react element matching the provided type, which may be a class or a function.

• collection: An array or a plain object.
• collectionOf(validator): An array or a plain object whose values match the provided validator.
• keyedObject(regex): An object whose keys match the provided regex.
• keyedObjectOf(regex, validator): An object whose keys match the provided regex and whose values match the provided validator.
• iterable: An iterable. Errors if enviroment does not support symbols.

• constant(val): The provided val, only.
• primative: a number, a string, or a boolean.
• stringMatching(regex): A string that matches the provided regex.
• stringWithLength(min, max=Infinity): A string with length between min and max, inclusive. If only one argument is provided, requires exactly that length.
• hex: A string consisting of hex characters, with an optional 0x at the beginning.
• date: A date object.
• dateBetween(min, max=Infinity): A date object which is within the provided interval.
• time: A value parsable by new Date().
• timeBetween(min, max=Infinity): A value parsable by new Date() which is within the provided interval.
• uuid: A uuid string (e.g. 123e4567-e89b-12d3-a456-426655440000).
• locale: A locale string, like en-US or jp.
• emailAddress: An email address (regex taken from the highest-upvoted SO answer).

• percent: A percentage.
• cssLength: A single css length, like 24px, 43% or 4rem.
• cssSize: Between 1 and 4 css lengths.
• color: A hex or rgb(a) string

• mongoId: A 24-character hex string.
• mongoIdKeyedObject: An object whose keys are mongo ids.
• mongoIdKeyedObjectOf(validator): An object whose keys are mongo ids and whose values match the provided validator.