Method unbind

packages/context/src/context.ts:388–399

* Unbind a binding from the context. No parent contexts will be checked. * * @remarks * If you need to unbind a binding owned by a parent context, use the code * below: * * ```ts * const ownerCtx = ctx.getOwnerContext(key); * return ownerCtx != null && ownerCtx.unbind(key);

(key: BindingAddress)

   * @returns true if the binding key is found and removed from this context
   */
  unbind(key: BindingAddress): boolean {
    this.debug('Unbind %s', key);
    key = BindingKey.validate(key);
    const binding = this.registry.get(key);
    // If not found, return `false`
    if (binding == null) return false;
    if (binding?.isLocked)
      throw new Error(`Cannot unbind key "${key}" of a locked binding`);
    this.registry.delete(key);
    this.emitEvent('unbind', {binding, context: this, type: 'unbind'});
    return true;
  }

  /**
   * Add a context event observer to the context