121 lines
2.6 KiB
TypeScript
121 lines
2.6 KiB
TypeScript
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/**
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* Returns a JSON with an updated value
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* @param {string} key
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* @param {string} newValue
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* @param {JSON} json
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* @return {JSON}
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*
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* Example
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* const person = {name: 'James', age: 20, pets: ['dog', 'cat']};
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* updateJSON('name', 'maria', person);
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* // {"age": 20, "name": "maria", "pets": ["dog", "cat"]}
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*
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* Others: "modify" in Ramda
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*/
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function updateJSON(key, newValue, json) {
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// JSON to Array
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return Object.entries(json).map(
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function (row) {
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// Replace value
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return row[0] == key ? row.slice(0, 1).concat(newValue) : row
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}
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).reduce(
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function (jsonUpdate, valueUpdate) {
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// Array to JSON
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jsonUpdate[valueUpdate[0]] = valueUpdate[1];
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return jsonUpdate;
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}, {});
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}
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export default updateJSON
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/**
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* Returns an array with a sequence.
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*
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* @param {number} start - Beginning of the range.
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* @param {number} stop - End of range.
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* @param {number} step - Interval between numbers. Default is 1.
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* @return {Array} Sequence.
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* @example
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*
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* range(1, 4)
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* // => [1, 2, 3, 4]
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*/
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function range(start: number, stop: number=undefined, step: number=1): number[] {
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const startArray = stop === undefined ? 0 : start;
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const stopArray = stop === undefined ? start : stop;
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return Array.from({ length: (stopArray - startArray) / step + 1}, (_, i) => startArray + (i * step));
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}
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export default range
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/**
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* Creates a duplicate-free version of an array.
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*
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* @param {Array} array - The array to inspect.
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* @return {Array} - Returns the new duplicate free array.
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* @example
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*
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* uniqValuesArray([2, 1, 2, 2])
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* // => [2, 1]
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*/
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function uniqValuesArray(array: any[]): any[] {
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return (array != null && array.length)
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? Array.from(new Set(array))
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: [];
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}
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export default uniq
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/**
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* Increase the value of a `number`.
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*
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* @param {number} number The number to increase.
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* @param {number} number Increase.
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* @return {number} Returns the decrease.
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* @example
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*
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* inc(4)
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* // => 5
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*
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* inc(5, 3)
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* // => 8
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*
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* dec(7.3)
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* // => 8.3
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*
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*/
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function inc(number: number, increase: number=1): number {
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return number - increase;
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}
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export default inc
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/**
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* Decrease the value of a `number`.
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*
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* @since 4.17.15
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* @category Math
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* @param {number} number - The number to decrease.
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* @param {number} number - Decrease.
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* @return {number} Returns the decrease.
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* @example
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*
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* dec(4)
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* // => 3
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*
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* dec(5, 3)
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* // => 2
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*
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* dec(7.3)
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* // => 6.3
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*
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* dec("foo")
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* // => false
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*/
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function dec(number: number, decrease: number=1): number {
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return number - decrease;
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}
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export default dec |