This plugin for JSDoc 3 sets the default values of boolean params to false unless another value is specified in the comments.

Install

npm i jsdoc-plugin-false-booleans

and add to the list of plugins in your JSDoc configuration file:

{
    "plugins": ["./node_modules/jsdoc-plugin-named-defaults/false-booleans.js"]
}

Example

/**
* @param {boolean} [later] whether to do start doing stuff a bit later
* @param {boolean} [async] whether to do stuff asynchronously
*/
function doStuff(later, async) {

}

the plugin will set false as the default value for both later and async params in the resulting documentation.