Fix #202

Add support for conf.remoteRoot (similar to VSCode).

* server/helpers/workspace.js (resolveUrl): Replace remoteRoot when defined.
* server/spec/helpers/workspace-spec.js: Add tests.

server/helpers/workspace.js

@@ -70,22 +70,33 @@ const resolveRoot = conf => {
 	return resolve(dir);
 };
 
+const convertRemoteRoot = (path, conf) => {
+	if (!conf.remoteRoot) {
+		return path;
+	}
+
+	return join(
+		resolveRoot(conf),
+		path.replace(new RegExp(`^${conf.remoteRoot}`), "")
+	);
+};
+
 const resolveUrl = (url, conf) => {
 	// In Node, script urls can be file paths.	The path doesn't
 	// always exist either, so also check for a protocol when parsed
 	// as a URL.
 	if (isAbsolute(url) || !parse(url).protocol) {
-		return url;
+		return convertRemoteRoot(url, conf);
 	}
 
 	// Always treat URLs using the file: protocol to have absolute pathnames.
 	let { protocol, pathname } = new URL(url);
 	if (protocol === "file:") {
-		return pathname;
+		return convertRemoteRoot(pathname, conf);
 	}
 
 	let root = resolveRoot(conf);
-	return resolve(`${root}/${pathname}`);
+	return convertRemoteRoot(resolve(`${root}/${pathname}`), conf);
 };
 
 const expandRoot = (path, root = "") => {

server/spec/helpers/workspace-spec.js

@@ -219,4 +219,62 @@ describe("URL resolution", () => {
 
 		expect(resolveUrl(url, conf)).toEqual(url);
 	});
+
+	describe("remote root replacement", () => {
+		it("Does not replace remote root when no remote root defined", () => {
+			let conf = {
+				projectFile: "/home/user/projects/foo/.indium.json"
+			};
+
+			let path = "/home/user/projects/foo/bar.js";
+
+			expect(resolveUrl(path, conf)).toEqual(path);
+		});
+
+		it("Replaces remote root when defined", () => {
+			let conf = {
+				projectFile: "/home/user/projects/foo/.indium.json",
+				remoteRoot: "/var/task/"
+			};
+
+			let path = "/var/task/bar.js";
+
+			expect(resolveUrl(path, conf)).toEqual("/home/user/projects/foo/bar.js");
+		});
+
+		it("Replaces local root with remote root when defined", () => {
+			let conf = {
+				projectFile: "/home/user/projects/foo/.indium.json",
+				root: "bar",
+				remoteRoot: "/var/task/"
+			};
+
+			let path = "/var/task/baz.js";
+
+			expect(resolveUrl(path, conf)).toEqual("/home/user/projects/foo/bar/baz.js");
+		});
+
+		it("Replaces remote root with no trailing slash", () => {
+			let conf = {
+				projectFile: "/home/user/projects/foo/.indium.json",
+				remoteRoot: "/var/task"
+			};
+
+			let path = "/var/task/bar/baz.js";
+
+			expect(resolveUrl(path, conf)).toEqual("/home/user/projects/foo/bar/baz.js");
+		});
+
+		it("Replaces remote root with file:// protocol", () => {
+			let conf = {
+				projectFile: "/home/user/projects/foo/.indium.json",
+				remoteRoot: "/var/task/"
+			};
+
+			let path = "/var/task/bar.js";
+
+			expect(resolveUrl(path, conf)).toEqual("/home/user/projects/foo/bar.js");
+		});
+	});
+
 });