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var natives = process.binding('natives')
var module = require('module')
var normalRequire = require
exports.source = src
exports.require = req
var vm = require('vm')
// fallback for 0.x support
var runInThisContext, ContextifyScript, Script
/*istanbul ignore next*/
try {
ContextifyScript = process.binding('contextify').ContextifyScript;
/*istanbul ignore next*/
if (process.version.split('.')[0].length > 2) { // v10.0.0 and above
runInThisContext = vm.runInThisContext;
} else {
runInThisContext = function runInThisContext(code, options) {
var script = new ContextifyScript(code, options);
return script.runInThisContext();
}
}
} catch (er) {
Script = process.binding('evals').NodeScript;
runInThisContext = Script.runInThisContext;
}
var wrap = [
'(function (exports, require, module, __filename, __dirname) { ',
'\n});'
];
// Basically the same functionality as node's (buried deep)
// NativeModule class, but without caching, or internal/ blocking,
// or a class, since that's not really necessary. I assume that if
// you're loading something with this module, it's because you WANT
// a separate copy. However, to preserve semantics, any require()
// calls made throughout the internal module load IS cached.
function req (id, whitelist) {
var cache = Object.create(null)
if (Array.isArray(whitelist)) {
// a whitelist of things to pull from the "actual" native modules
whitelist.forEach(function (id) {
cache[id] = {
loading: false,
loaded: true,
filename: id + '.js',
exports: require(id)
}
})
}
return req_(id, cache)
}
function req_ (id, cache) {
// Buffer is special, because it's a type rather than a "normal"
// class, and many things depend on `Buffer.isBuffer` working.
if (id === 'buffer') {
return require('buffer')
}
// native_module isn't actually a natives binding.
// weird, right?
if (id === 'native_module') {
return {
getSource: src,
wrap: function (script) {
return wrap[0] + script + wrap[1]
},
wrapper: wrap,
_cache: cache,
_source: natives,
nonInternalExists: function (id) {
return id.indexOf('internal/') !== 0;
}
}
}
var source = src(id)
if (!source) {
return undefined
}
source = wrap[0] + source + wrap[1]
var cachingRequire = function require (id) {
if (cache[id]) {
return cache[id].exports
}
if (id === 'internal/bootstrap/loaders' || id === 'internal/process') {
// Provide just enough to keep `graceful-fs@3` working and tests passing.
// For now.
return {
internalBinding: function(name) {
if (name === 'types') {
return process.binding('util');
} else {
try {
return process.binding(name);
} catch (e) {}
return {};
}
},
NativeModule: {
_source: process.binding('natives'),
nonInternalExists: function(id) {
return !id.startsWith('internal/');
}
}
};
}
return req_(id, cache)
}
var nm = {
exports: {},
loading: true,
loaded: false,
filename: id + '.js'
}
cache[id] = nm
var fn
var setV8Flags = false
try {
require('v8').setFlagsFromString('--allow_natives_syntax')
setV8Flags = true
} catch (e) {}
try {
/* istanbul ignore else */
if (ContextifyScript) {
fn = runInThisContext(source, {
filename: nm.filename,
lineOffset: 0,
displayErrors: true
});
} else {
fn = runInThisContext(source, nm.filename, true);
}
fn(nm.exports, cachingRequire, nm, nm.filename)
nm.loaded = true
} finally {
nm.loading = false
/*istanbul ignore next*/
if (setV8Flags) {
// Ref: https://github.com/nodejs/node/blob/591a24b819d53a555463b1cbf9290a6d8bcc1bcb/lib/internal/bootstrap_node.js#L429-L434
var re = /^--allow[-_]natives[-_]syntax$/
if (!process.execArgv.some(function (s) { return re.test(s) }))
require('v8').setFlagsFromString('--noallow_natives_syntax')
}
}
return nm.exports
}
function src (id) {
return natives[id]
}
|
