How do I set up Typescript to use the JSDoc types if it exists-CodePudding

How do I set up Typescript to use the JSDoc types if it exists?

I have my function annotating the parameter and return type but typescript still as any. How can I set up Typescript to define my parameter and return types by its JSDoc if a JSDoc exists? (Visual Studio Code error)

/**
 * Creates arrow icon's class name to rotate it upon its x axis.
 * 
 * Arrow icon communicates to the user that they can expand or collapse the filter.
 *
 * @param {boolean} isOpen If the filter is open so that it can be viewed.
 * @returns {string} The class name for the arrow icon.
 */
const arrowClassName = (isOpen) =>
  isOpen ? styles.arrowIcon : `${styles.arrowIcon} ${styles.expanded}`;

Error displayed on isOpen: Parameter 'isOpen' implicitly has an 'any' type.ts(7006)

CodePudding user response：

Typescript requires files to be in Javascript (*.js) to support most the of JSDoc annotations.