flow like the river

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root 2025-11-07 00:06:12 +01:00
commit 013fe673f3
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type ListItem = any;
type KeyAccessor = string | ((listItem: ListItem) => string);
type ReducerFn = (items: ListItem[]) => any;
interface NestedResult {
[key: string]: NestedResult | ListItem | ListItem[];
}
type FlatResult = {
keys: string[];
vals: ListItem | ListItem[]
}[];
declare function indexBy(
list: ListItem[],
keyAccessors: KeyAccessor | KeyAccessor[],
multiItem?: boolean | ReducerFn,
flattenKeys?: boolean
): NestedResult | FlatResult;
export { indexBy as default };

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// Version 1.4.1 index-array-by - https://github.com/vasturiano/index-array-by
(function (global, factory) {
typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
typeof define === 'function' && define.amd ? define(factory) :
(global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.indexBy = factory());
})(this, (function () { 'use strict';
function _iterableToArrayLimit(arr, i) {
var _i = null == arr ? null : "undefined" != typeof Symbol && arr[Symbol.iterator] || arr["@@iterator"];
if (null != _i) {
var _s,
_e,
_x,
_r,
_arr = [],
_n = !0,
_d = !1;
try {
if (_x = (_i = _i.call(arr)).next, 0 === i) {
if (Object(_i) !== _i) return;
_n = !1;
} else for (; !(_n = (_s = _x.call(_i)).done) && (_arr.push(_s.value), _arr.length !== i); _n = !0);
} catch (err) {
_d = !0, _e = err;
} finally {
try {
if (!_n && null != _i.return && (_r = _i.return(), Object(_r) !== _r)) return;
} finally {
if (_d) throw _e;
}
}
return _arr;
}
}
function _objectWithoutPropertiesLoose(source, excluded) {
if (source == null) return {};
var target = {};
var sourceKeys = Object.keys(source);
var key, i;
for (i = 0; i < sourceKeys.length; i++) {
key = sourceKeys[i];
if (excluded.indexOf(key) >= 0) continue;
target[key] = source[key];
}
return target;
}
function _objectWithoutProperties(source, excluded) {
if (source == null) return {};
var target = _objectWithoutPropertiesLoose(source, excluded);
var key, i;
if (Object.getOwnPropertySymbols) {
var sourceSymbolKeys = Object.getOwnPropertySymbols(source);
for (i = 0; i < sourceSymbolKeys.length; i++) {
key = sourceSymbolKeys[i];
if (excluded.indexOf(key) >= 0) continue;
if (!Object.prototype.propertyIsEnumerable.call(source, key)) continue;
target[key] = source[key];
}
}
return target;
}
function _slicedToArray(arr, i) {
return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _unsupportedIterableToArray(arr, i) || _nonIterableRest();
}
function _toConsumableArray(arr) {
return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _unsupportedIterableToArray(arr) || _nonIterableSpread();
}
function _arrayWithoutHoles(arr) {
if (Array.isArray(arr)) return _arrayLikeToArray(arr);
}
function _arrayWithHoles(arr) {
if (Array.isArray(arr)) return arr;
}
function _iterableToArray(iter) {
if (typeof Symbol !== "undefined" && iter[Symbol.iterator] != null || iter["@@iterator"] != null) return Array.from(iter);
}
function _unsupportedIterableToArray(o, minLen) {
if (!o) return;
if (typeof o === "string") return _arrayLikeToArray(o, minLen);
var n = Object.prototype.toString.call(o).slice(8, -1);
if (n === "Object" && o.constructor) n = o.constructor.name;
if (n === "Map" || n === "Set") return Array.from(o);
if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen);
}
function _arrayLikeToArray(arr, len) {
if (len == null || len > arr.length) len = arr.length;
for (var i = 0, arr2 = new Array(len); i < len; i++) arr2[i] = arr[i];
return arr2;
}
function _nonIterableSpread() {
throw new TypeError("Invalid attempt to spread non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
}
function _nonIterableRest() {
throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
}
function _toPrimitive(input, hint) {
if (typeof input !== "object" || input === null) return input;
var prim = input[Symbol.toPrimitive];
if (prim !== undefined) {
var res = prim.call(input, hint || "default");
if (typeof res !== "object") return res;
throw new TypeError("@@toPrimitive must return a primitive value.");
}
return (hint === "string" ? String : Number)(input);
}
function _toPropertyKey(arg) {
var key = _toPrimitive(arg, "string");
return typeof key === "symbol" ? key : String(key);
}
var index = (function () {
var list = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : [];
var keyAccessors = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : [];
var multiItem = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : true;
var flattenKeys = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : false;
var keys = (keyAccessors instanceof Array ? keyAccessors.length ? keyAccessors : [undefined] : [keyAccessors]).map(function (key) {
return {
keyAccessor: key,
isProp: !(key instanceof Function)
};
});
var indexedResult = list.reduce(function (res, item) {
var iterObj = res;
var itemVal = item;
keys.forEach(function (_ref, idx) {
var keyAccessor = _ref.keyAccessor,
isProp = _ref.isProp;
var key;
if (isProp) {
var _itemVal = itemVal,
propVal = _itemVal[keyAccessor],
rest = _objectWithoutProperties(_itemVal, [keyAccessor].map(_toPropertyKey));
key = propVal;
itemVal = rest;
} else {
key = keyAccessor(itemVal, idx);
}
if (idx + 1 < keys.length) {
if (!iterObj.hasOwnProperty(key)) {
iterObj[key] = {};
}
iterObj = iterObj[key];
} else {
// Leaf key
if (multiItem) {
if (!iterObj.hasOwnProperty(key)) {
iterObj[key] = [];
}
iterObj[key].push(itemVal);
} else {
iterObj[key] = itemVal;
}
}
});
return res;
}, {});
if (multiItem instanceof Function) {
// Reduce leaf multiple values
(function reduce(node) {
var level = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 1;
if (level === keys.length) {
Object.keys(node).forEach(function (k) {
return node[k] = multiItem(node[k]);
});
} else {
Object.values(node).forEach(function (child) {
return reduce(child, level + 1);
});
}
})(indexedResult); // IIFE
}
var result = indexedResult;
if (flattenKeys) {
// flatten into array
result = [];
(function flatten(node) {
var accKeys = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : [];
if (accKeys.length === keys.length) {
result.push({
keys: accKeys,
vals: node
});
} else {
Object.entries(node).forEach(function (_ref2) {
var _ref3 = _slicedToArray(_ref2, 2),
key = _ref3[0],
val = _ref3[1];
return flatten(val, [].concat(_toConsumableArray(accKeys), [key]));
});
}
})(indexedResult); //IIFE
if (keyAccessors instanceof Array && keyAccessors.length === 0 && result.length === 1) {
// clear keys if there's no key accessors (single result)
result[0].keys = [];
}
}
return result;
});
return index;
}));
//# sourceMappingURL=index-array-by.js.map

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// Version 1.4.1 index-array-by - https://github.com/vasturiano/index-array-by
!function(t,r){"object"==typeof exports&&"undefined"!=typeof module?module.exports=r():"function"==typeof define&&define.amd?define(r):(t="undefined"!=typeof globalThis?globalThis:t||self).indexBy=r()}(this,(function(){"use strict";function t(t,r){if(null==t)return{};var e,n,o=function(t,r){if(null==t)return{};var e,n,o={},i=Object.keys(t);for(n=0;n<i.length;n++)e=i[n],r.indexOf(e)>=0||(o[e]=t[e]);return o}(t,r);if(Object.getOwnPropertySymbols){var i=Object.getOwnPropertySymbols(t);for(n=0;n<i.length;n++)e=i[n],r.indexOf(e)>=0||Object.prototype.propertyIsEnumerable.call(t,e)&&(o[e]=t[e])}return o}function r(t,r){return function(t){if(Array.isArray(t))return t}(t)||function(t,r){var e=null==t?null:"undefined"!=typeof Symbol&&t[Symbol.iterator]||t["@@iterator"];if(null!=e){var n,o,i,u,a=[],l=!0,f=!1;try{if(i=(e=e.call(t)).next,0===r){if(Object(e)!==e)return;l=!1}else for(;!(l=(n=i.call(e)).done)&&(a.push(n.value),a.length!==r);l=!0);}catch(t){f=!0,o=t}finally{try{if(!l&&null!=e.return&&(u=e.return(),Object(u)!==u))return}finally{if(f)throw o}}return a}}(t,r)||n(t,r)||function(){throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.")}()}function e(t){return function(t){if(Array.isArray(t))return o(t)}(t)||function(t){if("undefined"!=typeof Symbol&&null!=t[Symbol.iterator]||null!=t["@@iterator"])return Array.from(t)}(t)||n(t)||function(){throw new TypeError("Invalid attempt to spread non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.")}()}function n(t,r){if(t){if("string"==typeof t)return o(t,r);var e=Object.prototype.toString.call(t).slice(8,-1);return"Object"===e&&t.constructor&&(e=t.constructor.name),"Map"===e||"Set"===e?Array.from(t):"Arguments"===e||/^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(e)?o(t,r):void 0}}function o(t,r){(null==r||r>t.length)&&(r=t.length);for(var e=0,n=new Array(r);e<r;e++)n[e]=t[e];return n}function i(t){var r=function(t,r){if("object"!=typeof t||null===t)return t;var e=t[Symbol.toPrimitive];if(void 0!==e){var n=e.call(t,r||"default");if("object"!=typeof n)return n;throw new TypeError("@@toPrimitive must return a primitive value.")}return("string"===r?String:Number)(t)}(t,"string");return"symbol"==typeof r?r:String(r)}return function(){var n=arguments.length>0&&void 0!==arguments[0]?arguments[0]:[],o=arguments.length>1&&void 0!==arguments[1]?arguments[1]:[],u=!(arguments.length>2&&void 0!==arguments[2])||arguments[2],a=arguments.length>3&&void 0!==arguments[3]&&arguments[3],l=(o instanceof Array?o.length?o:[void 0]:[o]).map((function(t){return{keyAccessor:t,isProp:!(t instanceof Function)}})),f=n.reduce((function(r,e){var n=r,o=e;return l.forEach((function(r,e){var a,f=r.keyAccessor;if(r.isProp){var c=o,s=c[f],y=t(c,[f].map(i));a=s,o=y}else a=f(o,e);e+1<l.length?(n.hasOwnProperty(a)||(n[a]={}),n=n[a]):u?(n.hasOwnProperty(a)||(n[a]=[]),n[a].push(o)):n[a]=o})),r}),{});u instanceof Function&&function t(r){var e=arguments.length>1&&void 0!==arguments[1]?arguments[1]:1;e===l.length?Object.keys(r).forEach((function(t){return r[t]=u(r[t])})):Object.values(r).forEach((function(r){return t(r,e+1)}))}(f);var c=f;return a&&(c=[],function t(n){var o=arguments.length>1&&void 0!==arguments[1]?arguments[1]:[];o.length===l.length?c.push({keys:o,vals:n}):Object.entries(n).forEach((function(n){var i=r(n,2),u=i[0],a=i[1];return t(a,[].concat(e(o),[u]))}))}(f),o instanceof Array&&0===o.length&&1===c.length&&(c[0].keys=[])),c}}));

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function _iterableToArrayLimit(arr, i) {
var _i = null == arr ? null : "undefined" != typeof Symbol && arr[Symbol.iterator] || arr["@@iterator"];
if (null != _i) {
var _s,
_e,
_x,
_r,
_arr = [],
_n = !0,
_d = !1;
try {
if (_x = (_i = _i.call(arr)).next, 0 === i) {
if (Object(_i) !== _i) return;
_n = !1;
} else for (; !(_n = (_s = _x.call(_i)).done) && (_arr.push(_s.value), _arr.length !== i); _n = !0);
} catch (err) {
_d = !0, _e = err;
} finally {
try {
if (!_n && null != _i.return && (_r = _i.return(), Object(_r) !== _r)) return;
} finally {
if (_d) throw _e;
}
}
return _arr;
}
}
function _objectWithoutPropertiesLoose(source, excluded) {
if (source == null) return {};
var target = {};
var sourceKeys = Object.keys(source);
var key, i;
for (i = 0; i < sourceKeys.length; i++) {
key = sourceKeys[i];
if (excluded.indexOf(key) >= 0) continue;
target[key] = source[key];
}
return target;
}
function _objectWithoutProperties(source, excluded) {
if (source == null) return {};
var target = _objectWithoutPropertiesLoose(source, excluded);
var key, i;
if (Object.getOwnPropertySymbols) {
var sourceSymbolKeys = Object.getOwnPropertySymbols(source);
for (i = 0; i < sourceSymbolKeys.length; i++) {
key = sourceSymbolKeys[i];
if (excluded.indexOf(key) >= 0) continue;
if (!Object.prototype.propertyIsEnumerable.call(source, key)) continue;
target[key] = source[key];
}
}
return target;
}
function _slicedToArray(arr, i) {
return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _unsupportedIterableToArray(arr, i) || _nonIterableRest();
}
function _toConsumableArray(arr) {
return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _unsupportedIterableToArray(arr) || _nonIterableSpread();
}
function _arrayWithoutHoles(arr) {
if (Array.isArray(arr)) return _arrayLikeToArray(arr);
}
function _arrayWithHoles(arr) {
if (Array.isArray(arr)) return arr;
}
function _iterableToArray(iter) {
if (typeof Symbol !== "undefined" && iter[Symbol.iterator] != null || iter["@@iterator"] != null) return Array.from(iter);
}
function _unsupportedIterableToArray(o, minLen) {
if (!o) return;
if (typeof o === "string") return _arrayLikeToArray(o, minLen);
var n = Object.prototype.toString.call(o).slice(8, -1);
if (n === "Object" && o.constructor) n = o.constructor.name;
if (n === "Map" || n === "Set") return Array.from(o);
if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen);
}
function _arrayLikeToArray(arr, len) {
if (len == null || len > arr.length) len = arr.length;
for (var i = 0, arr2 = new Array(len); i < len; i++) arr2[i] = arr[i];
return arr2;
}
function _nonIterableSpread() {
throw new TypeError("Invalid attempt to spread non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
}
function _nonIterableRest() {
throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
}
function _toPrimitive(input, hint) {
if (typeof input !== "object" || input === null) return input;
var prim = input[Symbol.toPrimitive];
if (prim !== undefined) {
var res = prim.call(input, hint || "default");
if (typeof res !== "object") return res;
throw new TypeError("@@toPrimitive must return a primitive value.");
}
return (hint === "string" ? String : Number)(input);
}
function _toPropertyKey(arg) {
var key = _toPrimitive(arg, "string");
return typeof key === "symbol" ? key : String(key);
}
var index = (function () {
var list = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : [];
var keyAccessors = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : [];
var multiItem = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : true;
var flattenKeys = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : false;
var keys = (keyAccessors instanceof Array ? keyAccessors.length ? keyAccessors : [undefined] : [keyAccessors]).map(function (key) {
return {
keyAccessor: key,
isProp: !(key instanceof Function)
};
});
var indexedResult = list.reduce(function (res, item) {
var iterObj = res;
var itemVal = item;
keys.forEach(function (_ref, idx) {
var keyAccessor = _ref.keyAccessor,
isProp = _ref.isProp;
var key;
if (isProp) {
var _itemVal = itemVal,
propVal = _itemVal[keyAccessor],
rest = _objectWithoutProperties(_itemVal, [keyAccessor].map(_toPropertyKey));
key = propVal;
itemVal = rest;
} else {
key = keyAccessor(itemVal, idx);
}
if (idx + 1 < keys.length) {
if (!iterObj.hasOwnProperty(key)) {
iterObj[key] = {};
}
iterObj = iterObj[key];
} else {
// Leaf key
if (multiItem) {
if (!iterObj.hasOwnProperty(key)) {
iterObj[key] = [];
}
iterObj[key].push(itemVal);
} else {
iterObj[key] = itemVal;
}
}
});
return res;
}, {});
if (multiItem instanceof Function) {
// Reduce leaf multiple values
(function reduce(node) {
var level = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 1;
if (level === keys.length) {
Object.keys(node).forEach(function (k) {
return node[k] = multiItem(node[k]);
});
} else {
Object.values(node).forEach(function (child) {
return reduce(child, level + 1);
});
}
})(indexedResult); // IIFE
}
var result = indexedResult;
if (flattenKeys) {
// flatten into array
result = [];
(function flatten(node) {
var accKeys = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : [];
if (accKeys.length === keys.length) {
result.push({
keys: accKeys,
vals: node
});
} else {
Object.entries(node).forEach(function (_ref2) {
var _ref3 = _slicedToArray(_ref2, 2),
key = _ref3[0],
val = _ref3[1];
return flatten(val, [].concat(_toConsumableArray(accKeys), [key]));
});
}
})(indexedResult); //IIFE
if (keyAccessors instanceof Array && keyAccessors.length === 0 && result.length === 1) {
// clear keys if there's no key accessors (single result)
result[0].keys = [];
}
}
return result;
});
export { index as default };