Eric Doughty-Papassideris
92aad866d5
renaming logger, adding health endpoint, working with old API, removing aggressive force save stuff, missing forgotten files etc, documentation
47 lines
2.2 KiB
TypeScript
47 lines
2.2 KiB
TypeScript
/** Return the key in `obj` of which the value matches the `value` parameter, or `undefined` */
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export function getKeyForValue<T>(value: T, obj: any): string | undefined {
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return (Object.entries(obj as { [key: string]: T }).filter(([, entryValue]) => value === entryValue)[0] ?? [])[0];
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}
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/** Same as `getKeyForValue` but returns a default string for values not found */
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export function getKeyForValueSafe<T>(value: T, obj: any, valueKind: string): string {
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const result = getKeyForValue(value, obj);
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return result ?? `(Unknown ${valueKind}: ${JSON.stringify(value)})`;
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}
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/** Suitable type for query arguments */
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export type QueryParams = { [key: string]: string | number };
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/** Compose a URL removing and adding slashes and query parameters as warranted */
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export function joinURL(path: string[], params?: QueryParams) {
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let joinedPath = path.map(x => x.replace(/(?:^\/+)+|(?:\/+$)/g, '')).join('/');
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if (path[path.length - 1].endsWith('/')) joinedPath += '/';
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const paramEntries = Object.entries(params || {});
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if (paramEntries.length === 0) return joinedPath;
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const query = paramEntries.map(p => p.map(encodeURIComponent).join('=')).join('&');
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return joinedPath + (joinedPath.indexOf('?') > -1 ? '&' : '?') + query;
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}
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/** Split a filename into an array `[name, extension]`. Either and both can be
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* the empty string. When the extension is the whole name, it is assumed to be
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* the name and not the extension.
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* @example
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* ```js
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* splitFilename("") // [ "", "" ]
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* splitFilename(".") // [ ".", "" ]
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* splitFilename("..") // [ ".", "" ]
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* splitFilename("filename") // [ "filename", "" ]
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* splitFilename(".dotfile") // [ ".dotfile", "" ]
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* splitFilename("a.dotfile") // [ "a", "dotfile" ]
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* splitFilename(".a.dotfile") // [ ".a", "dotfile" ]
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* splitFilename("a.b.dotfile") // [ "a.b", "dotfile" ]
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* splitFilename(".a.b.dotfile") // [ ".a.b", "dotfile" ]
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* ```
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*/
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export function splitFilename(filename: string): [string, string] {
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const parts = filename.split('.');
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if (parts.length < 2 || (parts.length == 2 && parts[0] === '')) return [filename, ''];
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const extension = parts.pop();
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return [parts.join('.'), extension];
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}
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