155 lines
5.7 KiB
JavaScript
155 lines
5.7 KiB
JavaScript
|
"use strict";
|
||
|
|
||
|
Object.defineProperty(exports, "__esModule", {
|
||
|
value: true
|
||
|
});
|
||
|
exports.createSelector = void 0;
|
||
|
exports.createSelectorCreator = createSelectorCreator;
|
||
|
exports.createStructuredSelector = void 0;
|
||
|
Object.defineProperty(exports, "defaultEqualityCheck", {
|
||
|
enumerable: true,
|
||
|
get: function get() {
|
||
|
return _defaultMemoize.defaultEqualityCheck;
|
||
|
}
|
||
|
});
|
||
|
Object.defineProperty(exports, "defaultMemoize", {
|
||
|
enumerable: true,
|
||
|
get: function get() {
|
||
|
return _defaultMemoize.defaultMemoize;
|
||
|
}
|
||
|
});
|
||
|
|
||
|
var _defaultMemoize = require("./defaultMemoize");
|
||
|
|
||
|
function getDependencies(funcs) {
|
||
|
var dependencies = Array.isArray(funcs[0]) ? funcs[0] : funcs;
|
||
|
|
||
|
if (!dependencies.every(function (dep) {
|
||
|
return typeof dep === 'function';
|
||
|
})) {
|
||
|
var dependencyTypes = dependencies.map(function (dep) {
|
||
|
return typeof dep === 'function' ? "function " + (dep.name || 'unnamed') + "()" : typeof dep;
|
||
|
}).join(', ');
|
||
|
throw new Error("createSelector expects all input-selectors to be functions, but received the following types: [" + dependencyTypes + "]");
|
||
|
}
|
||
|
|
||
|
return dependencies;
|
||
|
}
|
||
|
|
||
|
function createSelectorCreator(memoize) {
|
||
|
for (var _len = arguments.length, memoizeOptionsFromArgs = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
|
||
|
memoizeOptionsFromArgs[_key - 1] = arguments[_key];
|
||
|
}
|
||
|
|
||
|
var createSelector = function createSelector() {
|
||
|
for (var _len2 = arguments.length, funcs = new Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {
|
||
|
funcs[_key2] = arguments[_key2];
|
||
|
}
|
||
|
|
||
|
var _recomputations = 0;
|
||
|
|
||
|
var _lastResult; // Due to the intricacies of rest params, we can't do an optional arg after `...funcs`.
|
||
|
// So, start by declaring the default value here.
|
||
|
// (And yes, the words 'memoize' and 'options' appear too many times in this next sequence.)
|
||
|
|
||
|
|
||
|
var directlyPassedOptions = {
|
||
|
memoizeOptions: undefined
|
||
|
}; // Normally, the result func or "output selector" is the last arg
|
||
|
|
||
|
var resultFunc = funcs.pop(); // If the result func is actually an _object_, assume it's our options object
|
||
|
|
||
|
if (typeof resultFunc === 'object') {
|
||
|
directlyPassedOptions = resultFunc; // and pop the real result func off
|
||
|
|
||
|
resultFunc = funcs.pop();
|
||
|
}
|
||
|
|
||
|
if (typeof resultFunc !== 'function') {
|
||
|
throw new Error("createSelector expects an output function after the inputs, but received: [" + typeof resultFunc + "]");
|
||
|
} // Determine which set of options we're using. Prefer options passed directly,
|
||
|
// but fall back to options given to createSelectorCreator.
|
||
|
|
||
|
|
||
|
var _directlyPassedOption = directlyPassedOptions,
|
||
|
_directlyPassedOption2 = _directlyPassedOption.memoizeOptions,
|
||
|
memoizeOptions = _directlyPassedOption2 === void 0 ? memoizeOptionsFromArgs : _directlyPassedOption2; // Simplifying assumption: it's unlikely that the first options arg of the provided memoizer
|
||
|
// is an array. In most libs I've looked at, it's an equality function or options object.
|
||
|
// Based on that, if `memoizeOptions` _is_ an array, we assume it's a full
|
||
|
// user-provided array of options. Otherwise, it must be just the _first_ arg, and so
|
||
|
// we wrap it in an array so we can apply it.
|
||
|
|
||
|
var finalMemoizeOptions = Array.isArray(memoizeOptions) ? memoizeOptions : [memoizeOptions];
|
||
|
var dependencies = getDependencies(funcs);
|
||
|
var memoizedResultFunc = memoize.apply(void 0, [function recomputationWrapper() {
|
||
|
_recomputations++; // apply arguments instead of spreading for performance.
|
||
|
|
||
|
return resultFunc.apply(null, arguments);
|
||
|
}].concat(finalMemoizeOptions)); // If a selector is called with the exact same arguments we don't need to traverse our dependencies again.
|
||
|
|
||
|
var selector = memoize(function dependenciesChecker() {
|
||
|
var params = [];
|
||
|
var length = dependencies.length;
|
||
|
|
||
|
for (var i = 0; i < length; i++) {
|
||
|
// apply arguments instead of spreading and mutate a local list of params for performance.
|
||
|
// @ts-ignore
|
||
|
params.push(dependencies[i].apply(null, arguments));
|
||
|
} // apply arguments instead of spreading for performance.
|
||
|
|
||
|
|
||
|
_lastResult = memoizedResultFunc.apply(null, params);
|
||
|
return _lastResult;
|
||
|
});
|
||
|
Object.assign(selector, {
|
||
|
resultFunc: resultFunc,
|
||
|
memoizedResultFunc: memoizedResultFunc,
|
||
|
dependencies: dependencies,
|
||
|
lastResult: function lastResult() {
|
||
|
return _lastResult;
|
||
|
},
|
||
|
recomputations: function recomputations() {
|
||
|
return _recomputations;
|
||
|
},
|
||
|
resetRecomputations: function resetRecomputations() {
|
||
|
return _recomputations = 0;
|
||
|
}
|
||
|
});
|
||
|
return selector;
|
||
|
}; // @ts-ignore
|
||
|
|
||
|
|
||
|
return createSelector;
|
||
|
}
|
||
|
|
||
|
var createSelector = /* #__PURE__ */createSelectorCreator(_defaultMemoize.defaultMemoize);
|
||
|
exports.createSelector = createSelector;
|
||
|
|
||
|
// Manual definition of state and output arguments
|
||
|
var createStructuredSelector = function createStructuredSelector(selectors, selectorCreator) {
|
||
|
if (selectorCreator === void 0) {
|
||
|
selectorCreator = createSelector;
|
||
|
}
|
||
|
|
||
|
if (typeof selectors !== 'object') {
|
||
|
throw new Error('createStructuredSelector expects first argument to be an object ' + ("where each property is a selector, instead received a " + typeof selectors));
|
||
|
}
|
||
|
|
||
|
var objectKeys = Object.keys(selectors);
|
||
|
var resultSelector = selectorCreator( // @ts-ignore
|
||
|
objectKeys.map(function (key) {
|
||
|
return selectors[key];
|
||
|
}), function () {
|
||
|
for (var _len3 = arguments.length, values = new Array(_len3), _key3 = 0; _key3 < _len3; _key3++) {
|
||
|
values[_key3] = arguments[_key3];
|
||
|
}
|
||
|
|
||
|
return values.reduce(function (composition, value, index) {
|
||
|
composition[objectKeys[index]] = value;
|
||
|
return composition;
|
||
|
}, {});
|
||
|
});
|
||
|
return resultSelector;
|
||
|
};
|
||
|
|
||
|
exports.createStructuredSelector = createStructuredSelector;
|