202 lines
8.1 KiB
Plaintext
202 lines
8.1 KiB
Plaintext
@c This document is part of the GNU ease.js manual.
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@c Copyright (C) 2011, 2013 Mike Gerwitz
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@c Permission is granted to copy, distribute and/or modify this document
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@c under the terms of the GNU Free Documentation License, Version 1.3
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@c or any later version published by the Free Software Foundation;
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@c with no Invariant Sections, no Front-Cover Texts, and no Back-Cover
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@c Texts. A copy of the license is included in the section entitled ``GNU
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@c Free Documentation License''.
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@node Source Tree
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@appendix Source Tree
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You should already have gotten a hold of the source tree
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(@pxref{Getting ease.js}). If not, please do so first and feel free to follow
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along.
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@example
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$ cd easejs
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$ ls -d */
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doc/ lib/ test/ tools/
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@end example
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The project contains four main directories in addition to the root directory:
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@table @file
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@item ./
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The root directory contains basic project files, such as @file{README},
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@file{Makefile} and @file{index.js}.
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@item doc/
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Contains documentation source files (you are currently reading part of it - the
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manual).
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@item lib/
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Contains the actual source code for the various modules.
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@item test/
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Contains unit and performance tests.
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@item tools/
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Various tools used during build process.
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@end table
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Let's take a look at each directory in more detail.
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@menu
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* Root Directory:: Contains basic project files
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* Doc Directory:: Contains source documentation files (manual)
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* Lib Directory:: Contains project source files (modules)
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* Test Directory:: Contains unit and performance tests
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* Tools Directory:: Contains build tools
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@end menu
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@node Root Directory
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@section Root Directory
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The root directory contains basic project files for common operations.
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@table @file
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@item index.js
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This file is loaded automatically when @samp{require( 'easejs' )} is used.
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@item LICENSE
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Contains the project license.
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@item Makefile
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Invoked by the @command{make} command. Used for building ease.js.
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@item package.json
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Used by @command{npm}, a package manager for Node.js, to automate installation.
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@item README.hacking
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Useful information for those looking to modify/contribute to the project.
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@item README.md
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Serves as a quick reference for the project, in markdown@footnote{See
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@uref{http://en.wikipedia.org/wiki/Markdown}.} format. This format was chosen
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because it is displayed nicely on GitHub.
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@item README.todo
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Incomplete tasks. Future direction of the project. If you're looking to help
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out, take a look at this file to see what needs to be done. (See also the bug
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tracker at @uref{http://easejs.org/bugs}).
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@end table
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These files will be discussed in further detail when they are actually used.
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@node Doc Directory
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@section Doc Directory
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The @file{doc/} directory contains the source files for the manual. The source
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files are in Texinfo@footnote{See @uref{http://www.gnu.org/software/texinfo/}.}
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format. Instructions for compiling the documentation are included later in this
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chapter.
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API documentation is @emph{not} included in this directory. It is generated from
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the source code.
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@node Lib Directory
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@section Lib Directory
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The @file{lib/} directory contains the source code for the project. Each source
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file represents a single CommonJS module, often containing a prototype, and is
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written in JavaScript. Additional information about each of the modules can be
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found in the header of each file.
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Unless you are developing for ease.js, you needn't concern yourself with these
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files. @file{index.js}, in the root directory, contains mappings to these files
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where necessary, exposing the useful portions of the API for general use. You
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can use ease.js without even recognizing that the @file{lib/} directory even
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exists.
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@node Test Directory
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@section Test Directory
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The @file{test/} directory contains all the unit tests for the project. ease.js
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follows a test-driven development model; every single aspect of the framework is
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tested to ensure that features work as intended both server-side and across all
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supported web browsers. The tests also serve as regression tests, ensuring that
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bugs are not introduced for anything that has been covered. These tests should
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also give outside developers confidence; if a developer makes a modification to
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ease.js and does not cause any failing tests, it's likely that their change
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didn't have negative consequences on the integrity of the framework.
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ease.js is currently in a transition period in regards to the style of the test
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cases. Tests written in the original format are prefixed with @samp{test-},
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followed by the name of the module, followed optionally by the specific part of
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the module that is being tested. Newer test cases are prefixed with the
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prototype name of the unit being tested, followed by @samp{Test.js}. If there
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are a number of test cases for a given prototype, any number of tests will be
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included (with the same suffix) in a directory with the same name as the
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prototype. The tests are written in JavaScript and use Node.js's @file{assert}
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module. Newer tests use a test case system that was developed to suit the needs
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of the project (still using the @file{assert} module). They may be run
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individually or all at once during the build process.
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Developers interested in contributing to ease.js can aid in this transition
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process by helping to move all @file{test-*} tests over to the new test case
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format.
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In addition, there exists a @file{test/perf/} directory that contains
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performance tests used for benchmarking.
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@node Tools Directory
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@section Tools Directory
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The @file{tools/} directory contains scripts and data necessary for the build
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process. The tools are shell scripts that may be run independently of the build
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process if you find them to be useful. The remaining files are data to accompany
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those tools.
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@table @file
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@item combine
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Concatenates all the modules and wraps them for client-side deployment. If
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requested, the tests are also wrapped and concatenated so that they may be run
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in the web browser. The contents are stripped of trailing commas using the
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@command{rmtrail} tool. The resulting file is @emph{not} minified; the user can
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use whatever process he/she wishes to do so. In the future, minification will be
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part of the build script.
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@item rmtrail
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Removes trailing commas from object and array definitions. Reads from standard
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in. @emph{This script is not intelligent.} It was designed to work with ease.js.
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It does not, for example, check to ensure that it is not removing commas from
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within strings. This would not be a difficult addition, but is currently
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unnecessary. Use caution when using this tool outside of ease.js.
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@item minify.js
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Responsible for receiving input from stdin and writing minified output to
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stdout. This script uses UglifyJS to minify source files for distribution,
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improving download times.
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@item browser-test.html
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Skeleton page to be used after the build process. Runs ease.js unit tests in the
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web browser and reports any failures. This is very important to ensure that
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ease.js operates consistently between all supported browsers. The tests that are
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run are the same exact tests that are run server-side.
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@item combine-test.tpl
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Contains a client-side implementation of any modules required for testing. This
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file contains mainly assertions. It is included by the @command{combine} script
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when tests are requested.
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@item combine.tpl
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Contains the basic functionality required to get CommonJS modules working
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client-side. This is a very basic implementation, only doing what is necessary
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for ease.js to work properly. It is not meant to be a solution for all of your
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client-side CommonJS problems.
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@item license.tpl
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Contains the license that is to appear atop every combined file, including
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minified. The original text must remain in tact. If you make changes to the
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source code, you are welcome to add additional text. See the @file{LICENSE} file
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in the root directory for more information on what is permitted.
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@end table
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While the tools may be useful outside of ease.js in some regard, please note
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that they have been tailored especially for ease.js. They do not contain
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unnecessary features that ease.js does not need to make use of. Therefore, you
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may need to adapt them to your own project and individual needs should you
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decide to use them in your own projects.
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