@theguild/federation-composition
Version:
Open Source Composition library for Apollo Federation
75 lines (74 loc) • 2.56 kB
JavaScript
const VERSION_MATCH = /v(\d{1,3})\.(\d{1,4})/i;
function parseVersion(version) {
const versionParts = version?.match(VERSION_MATCH);
if (versionParts?.length) {
const [_full, major, minor] = versionParts;
return [Number(major), Number(minor)];
}
return [-1, -1];
}
export class FederatedLinkUrl {
identity;
name;
version;
major;
minor;
constructor(identity, name, version) {
this.identity = identity;
this.name = name;
this.version = version;
const [major, minor] = parseVersion(version);
this.major = major;
this.minor = minor;
}
toString() {
return `${this.identity}${this.version ? `/${this.version}` : ""}`;
}
static fromUrl = (urlSource) => {
const url = new URL(urlSource);
const parts = url.pathname.split("/").filter(Boolean);
const versionOrName = parts[parts.length - 1];
if (versionOrName) {
if (VERSION_MATCH.test(versionOrName)) {
const maybeName = parts[parts.length - 2];
return new FederatedLinkUrl(url.origin +
(maybeName ? `/${parts.slice(0, parts.length - 1).join("/")}` : ""), maybeName ?? null, versionOrName);
}
return new FederatedLinkUrl(`${url.origin}/${parts.join("/")}`, versionOrName, null);
}
return new FederatedLinkUrl(url.origin, null, null);
};
supports(...args) {
const majorOrVersion = args[0];
let major, minor;
if (typeof majorOrVersion === "string") {
[major, minor] = parseVersion(majorOrVersion);
}
else if (typeof majorOrVersion === "number") {
[major, minor] = args;
}
else if (majorOrVersion instanceof FederatedLinkUrl) {
if (majorOrVersion.identity !== this.identity) {
return false;
}
major = majorOrVersion.major;
minor = majorOrVersion.minor;
}
else if (majorOrVersion === null) {
return majorOrVersion === this.version;
}
else {
throw new Error(`Unsupported version argument: ${JSON.stringify(args)} [${typeof args}].`);
}
return this.isCompatibleVersion(major, minor);
}
isCompatibleVersion(major, minor) {
if (this.major === major) {
if (this.major === 0) {
return this.minor === minor;
}
return this.minor >= minor;
}
return false;
}
}