implab/implabjs-djx Files · djx/src/main/ts/observable.ts

Testing nested watch, release candidate

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r101:bb6b1db1b430 v1.3


                r101:bb6b1db1b430

v1.3

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             observable.ts
        
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             / djx / src / main / ts / observable.ts
          
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        cin
    
refactoring, adding scope to rendering methods

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      import { IDestroyable } from "@implab/core-amd/interfaces";

      export interface Sink<T> {

          next: (value: T) => void;

          error: (e: unknown) => void;

          complete: () => void;

      }

      export type Consumer<T> = Partial<Sink<T>>;

      export type Producer<T> = (sink: Sink<T>) => (void | (() => void));

      export interface Observable<T> {

        cin
    
Added playground project

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          on(consumer: Partial<Sink<T>>): IDestroyable;

        cin
    
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      } 

      const noop = () => {};

      const sink = <T>(consumer: Consumer<T>) => {

          const { next = noop, error = noop, complete = noop } = consumer;

          let done = false;

          return {

        cin
    
Testing nested watch, release candidate

              r101
            
              next: (value: T) => !done && next(value),

              error: (e: unknown) => !done && (done = true, error(e)),

              complete: () => !done && (done = true, complete())

        cin
    
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          };

      }

        cin
    
Added playground project

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      export const observe = <T>(producer: Producer<T>) : Observable<T> => ({

        cin
    
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          on: (consumer: Consumer<T>) => ({

              destroy: producer(sink(consumer)) ?? noop

          })

      });

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cin refactoring, adding scope to rendering methods	r96	import { IDestroyable } from "@implab/core-amd/interfaces";

		export interface Sink<T> {
		next: (value: T) => void;
		error: (e: unknown) => void;
		complete: () => void;
		}

		export type Consumer<T> = Partial<Sink<T>>;

		export type Producer<T> = (sink: Sink<T>) => (void \| (() => void));

		export interface Observable<T> {
cin Added playground project	r97	on(consumer: Partial<Sink<T>>): IDestroyable;
cin refactoring, adding scope to rendering methods	r96	}

		const noop = () => {};

		const sink = <T>(consumer: Consumer<T>) => {
		const { next = noop, error = noop, complete = noop } = consumer;
		let done = false;

		return {
cin Testing nested watch, release candidate	r101	next: (value: T) => !done && next(value),
		error: (e: unknown) => !done && (done = true, error(e)),
		complete: () => !done && (done = true, complete())
cin refactoring, adding scope to rendering methods	r96	};
		}

cin Added playground project	r97	export const observe = <T>(producer: Producer<T>) : Observable<T> => ({
cin refactoring, adding scope to rendering methods	r96	on: (consumer: Consumer<T>) => ({
		destroy: producer(sink(consumer)) ?? noop
		})
		});