24 lines
785 B
JavaScript
24 lines
785 B
JavaScript
/* eslint max-statements-per-line: ["error", { "max": 2 }] */
|
|
const suffixes = /(#|\/)+$/;
|
|
const trailingHash = /#$/;
|
|
const isDomain = /^[^:]+:\/\/[^/]+\//;
|
|
const trailingFragments = /\/[^/]*$/;
|
|
const idAndPointer = /#.*$/;
|
|
export default function joinScope(previous, id) {
|
|
if (previous == null && id == null) {
|
|
return "#";
|
|
}
|
|
if (id == null) {
|
|
return previous.replace(trailingHash, "");
|
|
}
|
|
if (previous == null) {
|
|
return id.replace(trailingHash, "");
|
|
}
|
|
if (id[0] === "#") {
|
|
return `${previous.replace(idAndPointer, "")}${id.replace(suffixes, "")}`;
|
|
}
|
|
if (isDomain.test(id)) {
|
|
return id.replace(trailingHash, "");
|
|
}
|
|
return `${previous.replace(trailingFragments, "")}/${id.replace(trailingHash, "")}`;
|
|
}
|