forked from github/plane
91 lines
2.5 KiB
TypeScript
91 lines
2.5 KiB
TypeScript
export const addSpaceIfCamelCase = (str: string) => str.replace(/([a-z])([A-Z])/g, "$1 $2");
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export const replaceUnderscoreIfSnakeCase = (str: string) => str.replace(/_/g, " ");
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export const capitalizeFirstLetter = (str: string) => str.charAt(0).toUpperCase() + str.slice(1);
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export const truncateText = (str: string, length: number) =>
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str.length > length ? `${str.substring(0, length)}...` : str;
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export const createSimilarString = (str: string) => {
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const shuffled = str
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.split("")
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.sort(() => Math.random() - 0.5)
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.join("");
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return shuffled;
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};
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const fallbackCopyTextToClipboard = (text: string) => {
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var textArea = document.createElement("textarea");
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textArea.value = text;
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// Avoid scrolling to bottom
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textArea.style.top = "0";
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textArea.style.left = "0";
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textArea.style.position = "fixed";
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document.body.appendChild(textArea);
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textArea.focus();
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textArea.select();
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try {
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// FIXME: Even though we are using this as a fallback, execCommand is deprecated 👎. We should find a better way to do this.
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// https://developer.mozilla.org/en-US/docs/Web/API/Document/execCommand
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var successful = document.execCommand("copy");
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var msg = successful ? "successful" : "unsuccessful";
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console.log("Fallback: Copying text command was " + msg);
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} catch (err) {
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console.error("Fallback: Oops, unable to copy", err);
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}
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document.body.removeChild(textArea);
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};
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export const copyTextToClipboard = async (text: string) => {
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if (!navigator.clipboard) {
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fallbackCopyTextToClipboard(text);
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return;
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}
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await navigator.clipboard.writeText(text);
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};
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const wordsVector = (str: string) => {
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const words = str.split(" ");
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const vector: any = {};
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for (let i = 0; i < words.length; i++) {
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const word = words[i];
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if (vector[word]) {
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vector[word] += 1;
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} else {
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vector[word] = 1;
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}
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}
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return vector;
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};
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export const cosineSimilarity = (a: string, b: string) => {
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const vectorA = wordsVector(a.trim());
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const vectorB = wordsVector(b.trim());
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const vectorAKeys = Object.keys(vectorA);
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const vectorBKeys = Object.keys(vectorB);
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const union = vectorAKeys.concat(vectorBKeys);
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let dotProduct = 0;
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let magnitudeA = 0;
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let magnitudeB = 0;
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for (let i = 0; i < union.length; i++) {
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const key = union[i];
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const valueA = vectorA[key] || 0;
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const valueB = vectorB[key] || 0;
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dotProduct += valueA * valueB;
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magnitudeA += valueA * valueA;
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magnitudeB += valueB * valueB;
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}
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return dotProduct / Math.sqrt(magnitudeA * magnitudeB);
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};
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