From 36d22d82aa202bb199967e9512281e9a53db42c9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 21:33:14 +0200 Subject: Adding upstream version 115.7.0esr. Signed-off-by: Daniel Baumann --- devtools/server/actors/utils/source-map-utils.js | 42 ++++++++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 devtools/server/actors/utils/source-map-utils.js (limited to 'devtools/server/actors/utils/source-map-utils.js') diff --git a/devtools/server/actors/utils/source-map-utils.js b/devtools/server/actors/utils/source-map-utils.js new file mode 100644 index 0000000000..fccd0d67bf --- /dev/null +++ b/devtools/server/actors/utils/source-map-utils.js @@ -0,0 +1,42 @@ +/* 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/. */ + +"use strict"; + +exports.getSourcemapBaseURL = getSourcemapBaseURL; +function getSourcemapBaseURL(url, global) { + let sourceMapBaseURL = null; + if (url) { + // Sources that have explicit URLs can be used directly as the base. + sourceMapBaseURL = url; + } else if (global?.location?.href) { + // If there is no URL for the source, the map comment is relative to the + // page being viewed, so we use the document href. + sourceMapBaseURL = global?.location?.href; + } else { + // If there is no valid base, the sourcemap URL will need to be an absolute + // URL of some kind. + return null; + } + + // A data URL is large and will never be a valid base, so we can just treat + // it as if there is no base at all to avoid a sending it to the client + // for no reason. + if (sourceMapBaseURL.startsWith("data:")) { + return null; + } + + // If the base URL is a blob, we want to resolve relative to the origin + // that created the blob URL, if there is one. + if (sourceMapBaseURL.startsWith("blob:")) { + try { + const parsedBaseURL = new URL(sourceMapBaseURL); + return parsedBaseURL.origin === "null" ? null : parsedBaseURL.origin; + } catch (err) { + return null; + } + } + + return sourceMapBaseURL; +} -- cgit v1.2.3