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             Scope.ts
        
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             / djx / src / main / ts / tsx / Scope.ts
          
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      import { IDestroyable, IRemovable } from "@implab/core-amd/interfaces";

      import { isDestroyable, isRemovable } from "@implab/core-amd/safe";

      export interface IScope {

          own(target: (() => void) | IDestroyable | IRemovable): void;

      }

      export class Scope implements IDestroyable, IScope {

          private readonly _cleanup: (() => void)[] = [];

          static readonly dummy: IScope = { own() { } };

          own(target: (() => void) | IDestroyable | IRemovable) {

              if (target instanceof Function) {

                  this._cleanup.push(target);

              } else if (isDestroyable(target)) {

                  this._cleanup.push(() => target.destroy());

              } else if (isRemovable(target)) {

                  this._cleanup.push(() => target.remove());

              }

          }

          clean() {

              const guard = (cb: () => void) => {

                  try {

                      cb();

                  } catch {

                      // guard

                  }

              }

              this._cleanup.forEach(guard);

              this._cleanup.length = 0;

          }

          destroy() {

              this.clean();

          }

      }

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				import { IDestroyable, IRemovable } from "@implab/core-amd/interfaces";
				import { isDestroyable, isRemovable } from "@implab/core-amd/safe";

				export interface IScope {
				own(target: (() => void) \| IDestroyable \| IRemovable): void;
				}

				export class Scope implements IDestroyable, IScope {
				private readonly _cleanup: (() => void)[] = [];

				static readonly dummy: IScope = { own() { } };

				own(target: (() => void) \| IDestroyable \| IRemovable) {
				if (target instanceof Function) {
				this._cleanup.push(target);
				} else if (isDestroyable(target)) {
				this._cleanup.push(() => target.destroy());
				} else if (isRemovable(target)) {
				this._cleanup.push(() => target.remove());
				}
				}

				clean() {
				const guard = (cb: () => void) => {
				try {
				cb();
				} catch {
				// guard
				}
				}

				this._cleanup.forEach(guard);
				this._cleanup.length = 0;
				}

				destroy() {
				this.clean();
				}

				}