fluidstate/extras/reactive-plugin-set.js

Library for fine-grained reactivity state management

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.getSetDeleteChanges = exports.getSetClearChanges = exports.getSetAddChanges = void 0;
var _reactivePlugin = require("./reactive-plugin");
/**
 * Generates change descriptions for adding a value to a Set.
 *
 * @param set The reactive set proxy.
 * @param nextValue The value being added. This is the original value provided by the user.
 * @returns An array of ReactiveChange objects.
 */
const getSetAddChanges = (set, nextValue) => {
  const setChange = {
    type: _reactivePlugin.SetChangeType.AddValue,
    nextValue
  };
  return [{
    type: _reactivePlugin.ReactiveChangeType.Set,
    set,
    setChange
  }];
};

/**
 * Generates change descriptions for deleting a value from a Set.
 *
 * @param set The reactive set proxy.
 * @param previousValue The value being deleted. This is the original value provided by the user.
 * @returns An array of ReactiveChange objects.
 */
exports.getSetAddChanges = getSetAddChanges;
const getSetDeleteChanges = (set, previousValue) => {
  const setChange = {
    type: _reactivePlugin.SetChangeType.DeleteValue,
    previousValue
  };
  return [{
    type: _reactivePlugin.ReactiveChangeType.Set,
    set,
    setChange
  }];
};

/**
 * Generates change descriptions for clearing a Set.
 *
 * @param set The reactive set proxy.
 * @param previousValues An array of all values (potentially reactive proxies) that were in the set before clearing.
 * @returns An array of ReactiveChange objects, or null if the set was already empty.
 */
exports.getSetDeleteChanges = getSetDeleteChanges;
const getSetClearChanges = (set, previousValues) => {
  const changes = previousValues.map(previousValue => {
    const setChange = {
      type: _reactivePlugin.SetChangeType.DeleteValue,
      previousValue
    };
    return {
      type: _reactivePlugin.ReactiveChangeType.Set,
      set,
      setChange
    };
  });
  return changes;
};
exports.getSetClearChanges = getSetClearChanges;
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