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https://issues.apache.org/jira/browse/CB-11117?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15250274#comment-15250274
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ASF GitHub Bot commented on CB-11117:
-------------------------------------
Github user jasongin commented on a diff in the pull request:
https://github.com/apache/cordova-lib/pull/429#discussion_r60448617
--- Diff: cordova-common/src/FileUpdater.js ---
@@ -0,0 +1,389 @@
+/**
+ Licensed to the Apache Software Foundation (ASF) under one
+ or more contributor license agreements. See the NOTICE file
+ distributed with this work for additional information
+ regarding copyright ownership. The ASF licenses this file
+ to you under the Apache License, Version 2.0 (the
+ "License"); you may not use this file except in compliance
+ with the License. You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing,
+ software distributed under the License is distributed on an
+ "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ KIND, either express or implied. See the License for the
+ specific language governing permissions and limitations
+ under the License.
+*/
+
+"use strict";
+
+var fs = require("fs");
+var path = require("path");
+var shell = require("shelljs");
+var minimatch = require("minimatch");
+
+/**
+ * Updates a target file or directory with a source file or directory.
(Directory updates are
+ * not recursive.) Stats for target and source items must be passed in.
This is an internal
+ * helper function used by other methods in this module.
+ *
+ * @param {string|null} rootDir Root directory (such as a project) to
which target and source
--- End diff --
I was aware of that syntax (and used it for the [log] parameter here). But
my interpretation was that it was for parameters that could be omitted by the
caller, not merely parameters that could be null. The JSDoc documentation isn't
clear about that, but everywhere else I've seen the brackets used was where the
parameter could be omitted.
---
In reply to:
[60384873](https://github.com/apache/cordova-lib/pull/429#discussion_r60384873)
[](ancestors = 60384873)
> Preparing platforms should skip copying files which haven't changed
> -------------------------------------------------------------------
>
> Key: CB-11117
> URL: https://issues.apache.org/jira/browse/CB-11117
> Project: Apache Cordova
> Issue Type: Improvement
> Components: Android, iOS, Windows
> Reporter: Jason Ginchereau
> Assignee: Jason Ginchereau
>
> Many cordova CLI commands include a "prepare" operation, including 'cordova
> build', 'cordova run', 'cordova plugin add', and more. Every time each of
> those commands runs, the target platform is "prepared", which involves
> copying all files from the [<project>/www,
> <project>/platforms/<platform>/platform_www, <project>/merges/<platform>] to
> the platform's target www folder, as well as copying a bunch of icons and
> splash screens to platform-specific locations.
> For the very first prepare of a platform, all that file copying is necessary.
> But most of the time after that most of the files being copied have not
> changed and therefore don't really need to be copied again. So the typical
> developer inner loop (edit a few source files, build and run the app, repeat)
> is a lot slower than it could be for a Cordova project, especially one that
> includes a significant number of source files or resources.
> Instead, Cordova should be smart enough to skip copying of files that haven't
> changed, based on their last-modified timestamp. (But also there should still
> be a way to force a clean/full/non-incremental build if desired.)
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