UNPKG

4.49 kBJavaScriptView Raw
1"use strict";
2exports.__esModule = true;
3exports.lastValue = exports.firstValue = exports.valueAt = void 0;
4var tslib_1 = require("tslib");
5function _valueAt(index, iterable) {
6 var iterable_1, iterable_1_1;
7 var e_1, _a;
8 return tslib_1.__awaiter(this, void 0, void 0, function () {
9 var current, value, e_1_1;
10 return tslib_1.__generator(this, function (_b) {
11 switch (_b.label) {
12 case 0:
13 current = 0;
14 _b.label = 1;
15 case 1:
16 _b.trys.push([1, 6, 7, 12]);
17 iterable_1 = tslib_1.__asyncValues(iterable);
18 _b.label = 2;
19 case 2: return [4 /*yield*/, iterable_1.next()];
20 case 3:
21 if (!(iterable_1_1 = _b.sent(), !iterable_1_1.done)) return [3 /*break*/, 5];
22 value = iterable_1_1.value;
23 if (current == index)
24 return [2 /*return*/, value];
25 current++;
26 _b.label = 4;
27 case 4: return [3 /*break*/, 2];
28 case 5: return [3 /*break*/, 12];
29 case 6:
30 e_1_1 = _b.sent();
31 e_1 = { error: e_1_1 };
32 return [3 /*break*/, 12];
33 case 7:
34 _b.trys.push([7, , 10, 11]);
35 if (!(iterable_1_1 && !iterable_1_1.done && (_a = iterable_1["return"]))) return [3 /*break*/, 9];
36 return [4 /*yield*/, _a.call(iterable_1)];
37 case 8:
38 _b.sent();
39 _b.label = 9;
40 case 9: return [3 /*break*/, 11];
41 case 10:
42 if (e_1) throw e_1.error;
43 return [7 /*endfinally*/];
44 case 11: return [7 /*endfinally*/];
45 case 12: throw new ReferenceError("Index ".concat(index, " not found in iterable"));
46 }
47 });
48 });
49}
50function valueAt(index, iterable) {
51 return iterable
52 ? _valueAt(index, iterable)
53 : function (curriedIterable) { return _valueAt(index, curriedIterable); };
54}
55exports.valueAt = valueAt;
56function firstValue(iterable) {
57 return iterable ? valueAt(0, iterable) : valueAt(0);
58}
59exports.firstValue = firstValue;
60function _lastValue(iterable) {
61 var iterable_2, iterable_2_1;
62 var e_2, _a;
63 return tslib_1.__awaiter(this, void 0, void 0, function () {
64 var value, wasEmpty, e_2_1;
65 return tslib_1.__generator(this, function (_b) {
66 switch (_b.label) {
67 case 0:
68 wasEmpty = true;
69 _b.label = 1;
70 case 1:
71 _b.trys.push([1, 6, 7, 12]);
72 iterable_2 = tslib_1.__asyncValues(iterable);
73 _b.label = 2;
74 case 2: return [4 /*yield*/, iterable_2.next()];
75 case 3:
76 if (!(iterable_2_1 = _b.sent(), !iterable_2_1.done)) return [3 /*break*/, 5];
77 value = iterable_2_1.value;
78 wasEmpty = false;
79 _b.label = 4;
80 case 4: return [3 /*break*/, 2];
81 case 5: return [3 /*break*/, 12];
82 case 6:
83 e_2_1 = _b.sent();
84 e_2 = { error: e_2_1 };
85 return [3 /*break*/, 12];
86 case 7:
87 _b.trys.push([7, , 10, 11]);
88 if (!(iterable_2_1 && !iterable_2_1.done && (_a = iterable_2["return"]))) return [3 /*break*/, 9];
89 return [4 /*yield*/, _a.call(iterable_2)];
90 case 8:
91 _b.sent();
92 _b.label = 9;
93 case 9: return [3 /*break*/, 11];
94 case 10:
95 if (e_2) throw e_2.error;
96 return [7 /*endfinally*/];
97 case 11: return [7 /*endfinally*/];
98 case 12:
99 if (!wasEmpty && value) {
100 return [2 /*return*/, value];
101 }
102 throw new ReferenceError('Cannot get last value of empty iterable');
103 }
104 });
105 });
106}
107function lastValue(iterable) {
108 return iterable
109 ? _lastValue(iterable)
110 : function (curriedIterable) { return _lastValue(curriedIterable); };
111}
112exports.lastValue = lastValue;