disposable-stack-helpers.js 1.3 KB

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  1. var uncurryThis = require('../internals/function-uncurry-this');
  2. var bind = require('../internals/function-bind-context');
  3. var anObject = require('../internals/an-object');
  4. var isNullOrUndefined = require('../internals/is-null-or-undefined');
  5. var getMethod = require('../internals/get-method');
  6. var wellKnownSymbol = require('../internals/well-known-symbol');
  7. var ASYNC_DISPOSE = wellKnownSymbol('asyncDispose');
  8. var DISPOSE = wellKnownSymbol('dispose');
  9. var push = uncurryThis([].push);
  10. var getDisposeMethod = function (V, hint) {
  11. if (hint == 'async-dispose') {
  12. return getMethod(V, ASYNC_DISPOSE) || getMethod(V, DISPOSE);
  13. } return getMethod(V, DISPOSE);
  14. };
  15. var createDisposableResource = function (V, hint, method) {
  16. return bind(method || getDisposeMethod(V, hint), V);
  17. };
  18. var addDisposableResource = function (disposable, V, hint, method) {
  19. var resource;
  20. if (!method) {
  21. if (isNullOrUndefined(V)) return;
  22. resource = createDisposableResource(V, hint);
  23. } else if (isNullOrUndefined(V)) {
  24. resource = createDisposableResource(undefined, hint, method);
  25. } else {
  26. resource = createDisposableResource(anObject(V), hint, method);
  27. }
  28. push(disposable.stack, resource);
  29. };
  30. module.exports = {
  31. getDisposeMethod: getDisposeMethod,
  32. addDisposableResource: addDisposableResource
  33. };