Files
30-seconds-of-code/node_modules/xstate/lib/patterns.js
2019-08-20 15:52:05 +02:00

61 lines
1.9 KiB
JavaScript

"use strict";
var __assign = (this && this.__assign) || function () {
__assign = Object.assign || function(t) {
for (var s, i = 1, n = arguments.length; i < n; i++) {
s = arguments[i];
for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p))
t[p] = s[p];
}
return t;
};
return __assign.apply(this, arguments);
};
Object.defineProperty(exports, "__esModule", { value: true });
var actions_1 = require("./actions");
function toggle(onState, offState, eventType) {
var _a, _b, _c;
return _a = {},
_a[onState] = {
on: (_b = {}, _b[eventType] = offState, _b)
},
_a[offState] = {
on: (_c = {}, _c[eventType] = onState, _c)
},
_a;
}
exports.toggle = toggle;
var defaultSequencePatternOptions = {
nextEvent: 'NEXT',
prevEvent: 'PREV'
};
function sequence(items, options) {
var resolvedOptions = __assign({}, defaultSequencePatternOptions, options);
var states = {};
var nextEventObject = resolvedOptions.nextEvent === undefined
? undefined
: actions_1.toEventObject(resolvedOptions.nextEvent);
var prevEventObject = resolvedOptions.prevEvent === undefined
? undefined
: actions_1.toEventObject(resolvedOptions.prevEvent);
items.forEach(function (item, i) {
var state = {
on: {}
};
if (i + 1 === items.length) {
state.type = 'final';
}
if (nextEventObject && i + 1 < items.length) {
state.on[nextEventObject.type] = items[i + 1];
}
if (prevEventObject && i > 0) {
state.on[prevEventObject.type] = items[i - 1];
}
states[item] = state;
});
return {
initial: items[0],
states: states
};
}
exports.sequence = sequence;
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