Files
standardnotes-app-web/app/assets/javascripts/utils.ts

140 lines
3.9 KiB
TypeScript

export function getParameterByName(name: string, url: string) {
name = name.replace(/[[\]]/g, '\\$&');
var regex = new RegExp('[?&]' + name + '(=([^&#]*)|&|#|$)');
var results = regex.exec(url);
if (!results) return null;
if (!results[2]) return '';
return decodeURIComponent(results[2].replace(/\+/g, ' '));
}
export function isNullOrUndefined(value: any) {
return value === null || value === undefined;
}
export function dictToArray<T>(dict: Record<any, T>) {
return Object.keys(dict).map((key) => dict[key]!);
}
export function getPlatformString() {
try {
const platform = navigator.platform.toLowerCase();
let trimmed = '';
if (platform.indexOf('mac') !== -1) {
trimmed = 'mac';
} else if (platform.indexOf('win') !== -1) {
trimmed = 'windows';
}
if (platform.indexOf('linux') !== -1) {
trimmed = 'linux';
}
return trimmed + (isDesktopApplication() ? '-desktop' : '-web');
} catch (e) {
return 'unknown-platform';
}
}
let sharedDateFormatter: Intl.DateTimeFormat;
export function dateToLocalizedString(date: Date) {
if (typeof Intl !== 'undefined' && Intl.DateTimeFormat) {
if (!sharedDateFormatter) {
const locale = (
(navigator.languages && navigator.languages.length)
? navigator.languages[0]
: navigator.language
);
sharedDateFormatter = new Intl.DateTimeFormat(locale, {
year: 'numeric',
month: 'numeric',
day: '2-digit',
hour: '2-digit',
minute: '2-digit',
});
}
return sharedDateFormatter.format(date);
} else {
// IE < 11, Safari <= 9.0.
// In English, this generates the string most similar to
// the toLocaleDateString() result above.
return date.toDateString() + ' ' + date.toLocaleTimeString();
}
}
/** Via https://davidwalsh.name/javascript-debounce-function */
export function debounce(this: any, func: any, wait: number, immediate = false) {
let timeout: any;
return () => {
const context = this;
const args = arguments;
const later = function () {
timeout = null;
if (!immediate) func.apply(context, args);
};
const callNow = immediate && !timeout;
clearTimeout(timeout);
timeout = setTimeout(later, wait);
if (callNow) func.apply(context, args);
};
};
export function isDesktopApplication() {
return (window as any).isElectron;
}
// https://tc39.github.io/ecma262/#sec-array.prototype.includes
if (!Array.prototype.includes) {
// eslint-disable-next-line no-extend-native
Object.defineProperty(Array.prototype, 'includes', {
value: function(searchElement: any, fromIndex: number) {
if (this == null) {
throw new TypeError('"this" is null or not defined');
}
// 1. Let O be ? ToObject(this value).
var o = Object(this);
// 2. Let len be ? ToLength(? Get(O, "length")).
var len = o.length >>> 0;
// 3. If len is 0, return false.
if (len === 0) {
return false;
}
// 4. Let n be ? ToInteger(fromIndex).
// (If fromIndex is undefined, this step produces the value 0.)
var n = fromIndex | 0;
// 5. If n ≥ 0, then
// a. Let k be n.
// 6. Else n < 0,
// a. Let k be len + n.
// b. If k < 0, let k be 0.
var k = Math.max(n >= 0 ? n : len - Math.abs(n), 0);
function sameValueZero(x: number, y: number) {
return (
x === y ||
(typeof x === 'number' &&
typeof y === 'number' &&
isNaN(x) &&
isNaN(y))
);
}
// 7. Repeat, while k < len
while (k < len) {
// a. Let elementK be the result of ? Get(O, ! ToString(k)).
// b. If SameValueZero(searchElement, elementK) is true, return true.
if (sameValueZero(o[k], searchElement)) {
return true;
}
// c. Increase k by 1.
k++;
}
// 8. Return false
return false;
}
});
}