Method _deleteValue

lib/util/WeakTupleMap.js:211–214

* Removes the value stored directly on this trie node.

()

	 * Removes the value stored directly on this trie node.
	 */
	_deleteValue() {
		this.f &= 6;
		this.v = undefined;
	}

	/**
	 * Returns the child node for a tuple element without creating one.