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<!DOCTYPE html>
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<title>index.coffee</title>
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<li id="title">
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<h1>index.coffee</h1>
</div>
</li>
<li id="section-1">
<div class="annotation">
<div class="sswrap ">
<a class="ss" href="#section-1">§</a>
</div>
<p>Node.js Implementation</p>
</div>
<div class="content"><div class='highlight'><pre>CoffeeScript = <span class="hljs-built_in">require</span> <span class="hljs-string">'./coffeescript'</span>
fs = <span class="hljs-built_in">require</span> <span class="hljs-string">'fs'</span>
vm = <span class="hljs-built_in">require</span> <span class="hljs-string">'vm'</span>
path = <span class="hljs-built_in">require</span> <span class="hljs-string">'path'</span>
helpers = CoffeeScript.helpers
CoffeeScript.transpile = <span class="hljs-function"><span class="hljs-params">(js, options)</span> -></span>
<span class="hljs-keyword">try</span>
babel = <span class="hljs-built_in">require</span> <span class="hljs-string">'@babel/core'</span>
<span class="hljs-keyword">catch</span>
<span class="hljs-keyword">try</span>
babel = <span class="hljs-built_in">require</span> <span class="hljs-string">'babel-core'</span>
<span class="hljs-keyword">catch</span></pre></div></div>
</li>
<li id="section-2">
<div class="annotation">
<div class="sswrap ">
<a class="ss" href="#section-2">§</a>
</div>
<p>This error is only for Node, as CLI users will see a different error
earlier if they don’t have Babel installed.</p>
</div>
<div class="content"><div class='highlight'><pre> <span class="hljs-keyword">throw</span> <span class="hljs-keyword">new</span> <span class="hljs-built_in">Error</span> <span class="hljs-string">'To use the transpile option, you must have the \'@babel/core\' module installed'</span>
babel.transform js, options</pre></div></div>
</li>
<li id="section-3">
<div class="annotation">
<div class="sswrap ">
<a class="ss" href="#section-3">§</a>
</div>
<p>The <code>compile</code> method shared by the CLI, Node and browser APIs.</p>
</div>
<div class="content"><div class='highlight'><pre>universalCompile = CoffeeScript.compile</pre></div></div>
</li>
<li id="section-4">
<div class="annotation">
<div class="sswrap ">
<a class="ss" href="#section-4">§</a>
</div>
<p>The <code>compile</code> method particular to the Node API.</p>
</div>
<div class="content"><div class='highlight'><pre>CoffeeScript.compile = <span class="hljs-function"><span class="hljs-params">(code, options)</span> -></span></pre></div></div>
</li>
<li id="section-5">
<div class="annotation">
<div class="sswrap ">
<a class="ss" href="#section-5">§</a>
</div>
<p>Pass a reference to Babel into the compiler, so that the transpile option
is available in the Node API. We need to do this so that tools like Webpack
can <code>require('coffeescript')</code> and build correctly, without trying to
require Babel.</p>
</div>
<div class="content"><div class='highlight'><pre> <span class="hljs-keyword">if</span> options?.transpile
options.transpile.transpile = CoffeeScript.transpile
universalCompile.call CoffeeScript, code, options</pre></div></div>
</li>
<li id="section-6">
<div class="annotation">
<div class="sswrap ">
<a class="ss" href="#section-6">§</a>
</div>
<p>Compile and execute a string of CoffeeScript (on the server), correctly
setting <code>__filename</code>, <code>__dirname</code>, and relative <code>require()</code>.</p>
</div>
<div class="content"><div class='highlight'><pre>CoffeeScript.run = <span class="hljs-function"><span class="hljs-params">(code, options = {})</span> -></span>
mainModule = <span class="hljs-built_in">require</span>.main</pre></div></div>
</li>
<li id="section-7">
<div class="annotation">
<div class="sswrap ">
<a class="ss" href="#section-7">§</a>
</div>
<p>Set the filename.</p>
</div>
<div class="content"><div class='highlight'><pre> mainModule.filename = process.argv[<span class="hljs-number">1</span>] =
<span class="hljs-keyword">if</span> options.filename <span class="hljs-keyword">then</span> fs.realpathSync(options.filename) <span class="hljs-keyword">else</span> helpers.anonymousFileName()</pre></div></div>
</li>
<li id="section-8">
<div class="annotation">
<div class="sswrap ">
<a class="ss" href="#section-8">§</a>
</div>
<p>Clear the module cache.</p>
</div>
<div class="content"><div class='highlight'><pre> mainModule.moduleCache <span class="hljs-keyword">and</span>= {}</pre></div></div>
</li>
<li id="section-9">
<div class="annotation">
<div class="sswrap ">
<a class="ss" href="#section-9">§</a>
</div>
<p>Assign paths for node_modules loading</p>
</div>
<div class="content"><div class='highlight'><pre> dir = <span class="hljs-keyword">if</span> options.filename?
path.dirname fs.realpathSync options.filename
<span class="hljs-keyword">else</span>
fs.realpathSync <span class="hljs-string">'.'</span>
mainModule.paths = <span class="hljs-built_in">require</span>(<span class="hljs-string">'module'</span>)._nodeModulePaths dir</pre></div></div>
</li>
<li id="section-10">
<div class="annotation">
<div class="sswrap ">
<a class="ss" href="#section-10">§</a>
</div>
<p>Save the options for compiling child imports.</p>
</div>
<div class="content"><div class='highlight'><pre> mainModule.options = options
options.filename = mainModule.filename
options.inlineMap = <span class="hljs-literal">true</span></pre></div></div>
</li>
<li id="section-11">
<div class="annotation">
<div class="sswrap ">
<a class="ss" href="#section-11">§</a>
</div>
<p>Compile.</p>
</div>
<div class="content"><div class='highlight'><pre> answer = CoffeeScript.compile code, options
code = answer.js ? answer
mainModule._compile code, mainModule.filename</pre></div></div>
</li>
<li id="section-12">
<div class="annotation">
<div class="sswrap ">
<a class="ss" href="#section-12">§</a>
</div>
<p>Compile and evaluate a string of CoffeeScript (in a Node.js-like environment).
The CoffeeScript REPL uses this to run the input.</p>
</div>
<div class="content"><div class='highlight'><pre>CoffeeScript.<span class="hljs-built_in">eval</span> = <span class="hljs-function"><span class="hljs-params">(code, options = {})</span> -></span>
<span class="hljs-keyword">return</span> <span class="hljs-keyword">unless</span> code = code.trim()
createContext = vm.Script.createContext ? vm.createContext
isContext = vm.isContext ? (ctx) ->
options.sandbox <span class="hljs-keyword">instanceof</span> createContext().constructor
<span class="hljs-keyword">if</span> createContext
<span class="hljs-keyword">if</span> options.sandbox?
<span class="hljs-keyword">if</span> isContext options.sandbox
sandbox = options.sandbox
<span class="hljs-keyword">else</span>
sandbox = createContext()
sandbox[k] = v <span class="hljs-keyword">for</span> own k, v <span class="hljs-keyword">of</span> options.sandbox
sandbox.global = sandbox.root = sandbox.GLOBAL = sandbox
<span class="hljs-keyword">else</span>
sandbox = global
sandbox.__filename = options.filename || <span class="hljs-string">'eval'</span>
sandbox.__dirname = path.dirname sandbox.__filename</pre></div></div>
</li>
<li id="section-13">
<div class="annotation">
<div class="sswrap ">
<a class="ss" href="#section-13">§</a>
</div>
<p>define module/require only if they chose not to specify their own</p>
</div>
<div class="content"><div class='highlight'><pre> <span class="hljs-keyword">unless</span> sandbox <span class="hljs-keyword">isnt</span> global <span class="hljs-keyword">or</span> sandbox.module <span class="hljs-keyword">or</span> sandbox.<span class="hljs-built_in">require</span>
Module = <span class="hljs-built_in">require</span> <span class="hljs-string">'module'</span>
sandbox.module = _module = <span class="hljs-keyword">new</span> Module(options.modulename || <span class="hljs-string">'eval'</span>)
sandbox.<span class="hljs-built_in">require</span> = _require = <span class="hljs-function"><span class="hljs-params">(path)</span> -></span> Module._load path, _module, <span class="hljs-literal">true</span>
_module.filename = sandbox.__filename
<span class="hljs-keyword">for</span> r <span class="hljs-keyword">in</span> <span class="hljs-built_in">Object</span>.getOwnPropertyNames <span class="hljs-built_in">require</span> <span class="hljs-keyword">when</span> r <span class="hljs-keyword">not</span> <span class="hljs-keyword">in</span> [<span class="hljs-string">'paths'</span>, <span class="hljs-string">'arguments'</span>, <span class="hljs-string">'caller'</span>]
_require[r] = <span class="hljs-built_in">require</span>[r]</pre></div></div>
</li>
<li id="section-14">
<div class="annotation">
<div class="sswrap ">
<a class="ss" href="#section-14">§</a>
</div>
<p>use the same hack node currently uses for their own REPL</p>
</div>
<div class="content"><div class='highlight'><pre> _require.paths = _module.paths = Module._nodeModulePaths process.cwd()
_require.resolve = <span class="hljs-function"><span class="hljs-params">(request)</span> -></span> Module._resolveFilename request, _module
o = {}
o[k] = v <span class="hljs-keyword">for</span> own k, v <span class="hljs-keyword">of</span> options
o.bare = <span class="hljs-literal">on</span> <span class="hljs-comment"># ensure return value</span>
js = CoffeeScript.compile code, o
<span class="hljs-keyword">if</span> sandbox <span class="hljs-keyword">is</span> global
vm.runInThisContext js
<span class="hljs-keyword">else</span>
vm.runInContext js, sandbox
CoffeeScript.register = <span class="hljs-function">-></span> <span class="hljs-built_in">require</span> <span class="hljs-string">'./register'</span></pre></div></div>
</li>
<li id="section-15">
<div class="annotation">
<div class="sswrap ">
<a class="ss" href="#section-15">§</a>
</div>
<p>Throw error with deprecation warning when depending upon implicit <code>require.extensions</code> registration</p>
</div>
<div class="content"><div class='highlight'><pre><span class="hljs-keyword">if</span> <span class="hljs-built_in">require</span>.extensions
<span class="hljs-keyword">for</span> ext <span class="hljs-keyword">in</span> CoffeeScript.FILE_EXTENSIONS <span class="hljs-keyword">then</span> <span class="hljs-keyword">do</span> (ext) ->
<span class="hljs-built_in">require</span>.extensions[ext] ?= <span class="hljs-function">-></span>
<span class="hljs-keyword">throw</span> <span class="hljs-keyword">new</span> <span class="hljs-built_in">Error</span> <span class="hljs-string">"""
Use CoffeeScript.register() or require the coffeescript/register module to require <span class="hljs-subst">#{ext}</span> files.
"""</span>
CoffeeScript._compileRawFileContent = <span class="hljs-function"><span class="hljs-params">(raw, filename, options = {})</span> -></span></pre></div></div>
</li>
<li id="section-16">
<div class="annotation">
<div class="sswrap ">
<a class="ss" href="#section-16">§</a>
</div>
<p>Strip the Unicode byte order mark, if this file begins with one.</p>
</div>
<div class="content"><div class='highlight'><pre> stripped = <span class="hljs-keyword">if</span> raw.charCodeAt(<span class="hljs-number">0</span>) <span class="hljs-keyword">is</span> <span class="hljs-number">0xFEFF</span> <span class="hljs-keyword">then</span> raw.substring <span class="hljs-number">1</span> <span class="hljs-keyword">else</span> raw
options = <span class="hljs-built_in">Object</span>.assign {}, options,
filename: filename
literate: helpers.isLiterate filename
sourceFiles: [filename]
<span class="hljs-keyword">try</span>
answer = CoffeeScript.compile stripped, options
<span class="hljs-keyword">catch</span> err</pre></div></div>
</li>
<li id="section-17">
<div class="annotation">
<div class="sswrap ">
<a class="ss" href="#section-17">§</a>
</div>
<p>As the filename and code of a dynamically loaded file will be different
from the original file compiled with CoffeeScript.run, add that
information to error so it can be pretty-printed later.</p>
</div>
<div class="content"><div class='highlight'><pre> <span class="hljs-keyword">throw</span> helpers.updateSyntaxError err, stripped, filename
answer
CoffeeScript._compileFile = <span class="hljs-function"><span class="hljs-params">(filename, options = {})</span> -></span>
raw = fs.readFileSync filename, <span class="hljs-string">'utf8'</span>
CoffeeScript._compileRawFileContent raw, filename, options
module.<span class="hljs-built_in">exports</span> = CoffeeScript</pre></div></div>
</li>
<li id="section-18">
<div class="annotation">
<div class="sswrap ">
<a class="ss" href="#section-18">§</a>
</div>
<p>Explicitly define all named exports so that Node’s automatic detection of
named exports from CommonJS packages finds all of them. This enables consuming
packages to write code like <code>import { compile } from 'coffeescript'</code>.
Don’t simplify this into a loop or similar; the <code>module.exports.name</code> part is
essential for Node’s algorithm to successfully detect the name.</p>
</div>
<div class="content"><div class='highlight'><pre>module.<span class="hljs-built_in">exports</span>.VERSION = CoffeeScript.VERSION
module.<span class="hljs-built_in">exports</span>.FILE_EXTENSIONS = CoffeeScript.FILE_EXTENSIONS
module.<span class="hljs-built_in">exports</span>.helpers = CoffeeScript.helpers
module.<span class="hljs-built_in">exports</span>.registerCompiled = CoffeeScript.registerCompiled
module.<span class="hljs-built_in">exports</span>.compile = CoffeeScript.compile
module.<span class="hljs-built_in">exports</span>.tokens = CoffeeScript.tokens
module.<span class="hljs-built_in">exports</span>.nodes = CoffeeScript.nodes
module.<span class="hljs-built_in">exports</span>.register = CoffeeScript.register
module.<span class="hljs-built_in">exports</span>.<span class="hljs-built_in">eval</span> = CoffeeScript.<span class="hljs-built_in">eval</span>
module.<span class="hljs-built_in">exports</span>.run = CoffeeScript.run
module.<span class="hljs-built_in">exports</span>.transpile = CoffeeScript.transpile
module.<span class="hljs-built_in">exports</span>.patchStackTrace = CoffeeScript.patchStackTrace
module.<span class="hljs-built_in">exports</span>._compileRawFileContent = CoffeeScript._compileRawFileContent
module.<span class="hljs-built_in">exports</span>._compileFile = CoffeeScript._compileFile</pre></div></div>
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