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JSUtils.js
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JSUtils.js
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module.exports = {
flatten: (array) => {
return array.reduce((flat, toFlatten) => {
return flat.concat(Array.isArray(toFlatten) ? module.exports.flatten(toFlatten) : toFlatten);
}, []);
},
indexOfMax: (arr) => {
if (arr.length === 0) {
return -1;
}
var max = arr[0];
var maxIndex = 0;
for (var i = 1; i < arr.length; i++) {
if (arr[i] > max) {
maxIndex = i;
max = arr[i];
}
}
return maxIndex;
},
indexOfMin: (arr) => {
if(arr.length === 0) {
return -1;
}
var min = arr[0];
var minIndex = 0;
for(var i = 1 ; i < arr.length; i++) {
if(arr[i] < min) {
minIndex = i;
min = arr[i];
}
}
return minIndex;
},
isNullOrWhitespace: (input) => {
return !input || !input.trim();
},
defaults: (configObject, defaults, required) => {
for (var property in defaults) {
if(!configObject.hasOwnProperty(property)) {
configObject[property] = defaults[property];
}
}
if(required) {
for(var i = 0; i < required.length; i++) {
if(!configObject.hasOwnProperty(required[i])) {
throw new Error(`Tried to construct object ${defaults.__name} but
missing property ${required[i]}`);
}
}
}
return configObject;
},
escapeHTML: (string) => {
let pre = document.createElement('pre');
let text = document.createTextNode( string );
pre.appendChild(text);
return pre.innerHTML;
},
};