Method assignOr

lib/RuntimeTemplate.js:446–450

* Returns a self-defaulting assignment, using the `||=` logical assignment * operator when supported and falling back to `target = target || value` * otherwise. `target` is evaluated twice in the fallback, so it must be * side-effect free. The expression evaluates to the resulting value. * M

(target, value)

	 * @returns {string} assignment expression
	 */
	assignOr(target, value) {
		return this.supportsLogicalAssignment()
			? `${target} ||= ${value}`
			: `${target} = ${target} || ${value}`;
	}

	/**
	 * Returns destructure array code.