mirror of https://github.com/vladmandic/human
49 lines
2.1 KiB
TypeScript
49 lines
2.1 KiB
TypeScript
/**
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* Simple helper functions used accross codebase
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*/
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// helper function: join two paths
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export function join(folder: string, file: string): string {
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const separator = folder.endsWith('/') ? '' : '/';
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const skipJoin = file.startsWith('.') || file.startsWith('/') || file.startsWith('http:') || file.startsWith('https:') || file.startsWith('file:');
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const path = skipJoin ? `${file}` : `${folder}${separator}${file}`;
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if (!path.toLocaleLowerCase().includes('.json')) throw new Error(`Human: ModelPath Error: ${path} Expecting JSON file`);
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return path;
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}
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// helper function: wrapper around console output
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export function log(...msg): void {
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const dt = new Date();
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const ts = `${dt.getHours().toString().padStart(2, '0')}:${dt.getMinutes().toString().padStart(2, '0')}:${dt.getSeconds().toString().padStart(2, '0')}.${dt.getMilliseconds().toString().padStart(3, '0')}`;
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// eslint-disable-next-line no-console
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if (msg) console.log(ts, 'Human:', ...msg);
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}
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// helper function: gets elapsed time on both browser and nodejs
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export const now = () => {
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if (typeof performance !== 'undefined') return performance.now();
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return parseInt((Number(process.hrtime.bigint()) / 1000 / 1000).toString());
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};
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// helper function: perform deep merge of multiple objects so it allows full inheriance with overrides
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export function mergeDeep(...objects) {
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const isObject = (obj) => obj && typeof obj === 'object';
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return objects.reduce((prev, obj) => {
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Object.keys(obj || {}).forEach((key) => {
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const pVal = prev[key];
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const oVal = obj[key];
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if (Array.isArray(pVal) && Array.isArray(oVal)) prev[key] = pVal.concat(...oVal);
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else if (isObject(pVal) && isObject(oVal)) prev[key] = mergeDeep(pVal, oVal);
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else prev[key] = oVal;
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});
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return prev;
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}, {});
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}
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// helper function: return min and max from input array
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export const minmax = (data: Array<number>) => data.reduce((acc: Array<number>, val) => {
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acc[0] = (acc[0] === undefined || val < acc[0]) ? val : acc[0];
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acc[1] = (acc[1] === undefined || val > acc[1]) ? val : acc[1];
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return acc;
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}, []);
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