Using typings for apex

Generating typings

sfdx typings:lwc:apex

or

sfdx typings:lwc

Usage

import { LightningElement, wire } from "lwc";
import methodReturningAccount from "@salesforce/apex/TestClass.methodReturningAccouts"

export default class Test extends LightningElement {
	/**
	 * Property that has value wired from TestClass.methodReturningAccouts method (it reutrns list of Accounts).
	 * Make sure to use typeof keyword in type definintion bellow.
	 * 
	 * @type {Wired<typeof methodReturningAccount>}
	 */
	wiredProperty

	/**
	 * Method that has wired value from same method
	 * @param {Wired<typeof methodReturningAccount>} wiredValue
	 */
	@wire(methodReturningAccount)
	wiredMethodStandard(wiredValue) {
		if (wiredValue.data) {
			//TODO
		}
	}

	/**
	 * Same as above, but now we are using deconstruction mechanism.
	 * Param in jsdocs can be named whatever you want (here I called wiredValue)
	 * 
	 * @param {Wired<typeof methodReturningAccount>} wiredValue
	 */
	@wire(methodReturningAccount)
	wiredMethodDeconstructed({ data, error }) {
		if (data) {
			//TODO
		}
	}

	/**
	 * @type {apex.TestClass}
	 */
	propertyWithSamePropertiesAsApexClass;

	/**
	 * @type {apex.TestClass.InnerClass}
	 */
	propertyWithSamePropertiesAsInnerClass
}