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getURL.js
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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at <http://mozilla.org/MPL/2.0/>. */
// @flow
import { parse } from "url";
import { merge } from "lodash";
export type ParsedURL = {
path: string,
group: string,
filename: string
};
export function getFilenameFromPath(pathname?: string) {
let filename = "";
if (pathname) {
filename = pathname.substring(pathname.lastIndexOf("/") + 1);
// This file does not have a name. Default should be (index).
if (filename == "" || !filename.includes(".")) {
filename = "(index)";
}
}
return filename;
}
const NoDomain = "(no domain)";
export function getURL(sourceUrl: string, debuggeeUrl: string = ""): ParsedURL {
const url = sourceUrl;
const def = { path: "", group: "", filename: "" };
if (!url) {
return def;
}
const { pathname, protocol, host, path } = parse(url);
const defaultDomain = parse(debuggeeUrl).host;
const filename = getFilenameFromPath(pathname);
switch (protocol) {
case "javascript:":
// Ignore `javascript:` URLs for now
return def;
case "webpack:":
// A Webpack source is a special case
return merge(def, {
path: path,
group: "Webpack",
filename: filename
});
case "ng:":
// An Angular source is a special case
return merge(def, {
path: path,
group: "Angular",
filename: filename
});
case "about:":
// An about page is a special case
return merge(def, {
path: "/",
group: url,
filename: filename
});
case "data:":
return merge(def, {
path: "/",
group: NoDomain,
filename: url
});
case null:
if (pathname && pathname.startsWith("/")) {
// If it's just a URL like "/foo/bar.js", resolve it to the file
// protocol
return merge(def, {
path: path,
group: "file://",
filename: filename
});
} else if (host === null) {
// We don't know what group to put this under, and it's a script
// with a weird URL. Just group them all under an anonymous group.
return merge(def, {
path: url,
group: defaultDomain,
filename: filename
});
}
break;
case "http:":
case "https:":
return merge(def, {
path: pathname,
group: host,
filename: filename
});
}
return merge(def, {
path: path,
group: protocol ? `${protocol}//` : "",
filename: filename
});
}