@data-client/rest
Version:
Quickly define typed REST resources and endpoints
55 lines • 7.85 kB
JavaScript
import { compile, parse, pathToRegexp } from './pathToRegexp.js';
const urlBaseCache = Object.create(null);
export function getUrlBase(path) {
if (!(path in urlBaseCache)) {
urlBaseCache[path] = compile(path);
}
return urlBaseCache[path];
}
const urlTokensCache = Object.create(null);
export function getUrlTokens(path) {
if (!(path in urlTokensCache)) {
urlTokensCache[path] = tokenMap(parse(path).tokens);
}
return urlTokensCache[path];
}
const pathRegexCache = Object.create(null);
export function getPathRegex(path) {
if (!(path in pathRegexCache)) {
pathRegexCache[path] = pathToRegexp(path).regexp;
}
return pathRegexCache[path];
}
function tokenMap(tokens) {
const tokenNames = new Set();
for (const token of tokens) {
switch (token.type) {
case 'param':
case 'wildcard':
tokenNames.add(token.name);
break;
case 'group':
for (const name of tokenMap(token.tokens)) {
tokenNames.add(name);
}
break;
}
}
return tokenNames;
}
const proto = Object.prototype;
const gpo = Object.getPrototypeOf;
export function isPojo(obj) {
if (obj === null || typeof obj !== 'object') {
return false;
}
return gpo(obj) === proto;
}
export function shortenPath(path) {
const lastTokenIndex = Math.max(path.lastIndexOf(':'), path.lastIndexOf('*'));
if (lastTokenIndex === -1) throw new Error('Resource path requires at least one :parameter or *wildcard');
let shortUrlRoot = path.substring(0, lastTokenIndex);
if (shortUrlRoot[shortUrlRoot.length - 1] === '/') shortUrlRoot = shortUrlRoot.substring(0, shortUrlRoot.length - 1);
return shortUrlRoot;
}
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