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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
commit36d22d82aa202bb199967e9512281e9a53db42c9 (patch)
tree105e8c98ddea1c1e4784a60a5a6410fa416be2de /devtools/client/debugger/src/utils/isMinified.js
parentInitial commit. (diff)
downloadfirefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz
firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'devtools/client/debugger/src/utils/isMinified.js')
-rw-r--r--devtools/client/debugger/src/utils/isMinified.js58
1 files changed, 58 insertions, 0 deletions
diff --git a/devtools/client/debugger/src/utils/isMinified.js b/devtools/client/debugger/src/utils/isMinified.js
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+++ b/devtools/client/debugger/src/utils/isMinified.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/>. */
+
+import { isFulfilled } from "./async-value";
+
+// Used to detect minification for automatic pretty printing
+const SAMPLE_SIZE = 50;
+const INDENT_COUNT_THRESHOLD = 5;
+const CHARACTER_LIMIT = 250;
+const _minifiedCache = new Map();
+
+export function isMinified(source, sourceTextContent) {
+ if (_minifiedCache.has(source.id)) {
+ return _minifiedCache.get(source.id);
+ }
+
+ if (
+ !sourceTextContent ||
+ !isFulfilled(sourceTextContent) ||
+ sourceTextContent.value.type !== "text"
+ ) {
+ return false;
+ }
+
+ let text = sourceTextContent.value.value;
+
+ let lineEndIndex = 0;
+ let lineStartIndex = 0;
+ let lines = 0;
+ let indentCount = 0;
+ let overCharLimit = false;
+
+ // Strip comments.
+ text = text.replace(/\/\*[\S\s]*?\*\/|\/\/(.+|\n)/g, "");
+
+ while (lines++ < SAMPLE_SIZE) {
+ lineEndIndex = text.indexOf("\n", lineStartIndex);
+ if (lineEndIndex == -1) {
+ break;
+ }
+ if (/^\s+/.test(text.slice(lineStartIndex, lineEndIndex))) {
+ indentCount++;
+ }
+ // For files with no indents but are not minified.
+ if (lineEndIndex - lineStartIndex > CHARACTER_LIMIT) {
+ overCharLimit = true;
+ break;
+ }
+ lineStartIndex = lineEndIndex + 1;
+ }
+
+ const minified =
+ (indentCount / lines) * 100 < INDENT_COUNT_THRESHOLD || overCharLimit;
+
+ _minifiedCache.set(source.id, minified);
+ return minified;
+}