utils.ts

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`47dfe48a` 2022-03-20 Pavel Safronov	1	export function generateHash(text: string) {
	2	var hash = 0;
	3	if (text.length == 0) {
	4	return hash;
	5	}
	6	for (let i = 0; i < text.length; i++) {
	7	var charCode = text.charCodeAt(i);
	8	hash = (hash << 7) - hash + charCode;
	9	hash = hash & hash;
	10	}
	11	return hash;
	12	}
	13
	14	export async function delay(delayInMs: number) {
	15	return new Promise((resolve) => {
	16	setTimeout(() => {
	17	resolve(2);
	18	}, delayInMs);
	19	});
	20	}
`f2c94061` 2022-03-21 Pavel Safronov	21
`e46456c2` 2022-03-22 Pavel Safronov	22	export async function copyToClipboard(textToCopy): Promise<void> {
	23	// navigator clipboard api needs a secure context (https)
	24	if (navigator.clipboard && window.isSecureContext) {
	25	// navigator clipboard api method'
	26	return navigator.clipboard.writeText(textToCopy);
	27	} else {
	28	// text area method
	29	let textArea = document.createElement("textarea");
	30	textArea.value = textToCopy;
	31	// make the textarea out of viewport
	32	textArea.style.position = "fixed";
	33	textArea.style.left = "-999999px";
	34	textArea.style.top = "-999999px";
	35	document.body.appendChild(textArea);
	36	textArea.focus();
	37	textArea.select();
	38	return new Promise((res, rej) => {
	39	// here the magic happens
	40	document.execCommand('copy') ? res() : rej();
	41	textArea.remove();
	42	});
	43	}
	44	}