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245 lines
8.9 KiB
245 lines
8.9 KiB
4 years ago
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#!/usr/bin/env node
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var fs = require('fs');
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var path = require('path');
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// These are the node packages we are going to wrap.
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var packages = {
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assert: { skip: true },
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async_hooks: { optional: true, skip: true },
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buffer: { skip: true },
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child_process: {
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exec: { promisify: true, returnsObject: true, args: 1, cb:['stdout','stderr'] },
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execFile: { promisify: true, returnsObject: true, args: 1, cb:['stdout','stderr'] },
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fork: { promisify: false },
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spawn: { promisify: false },
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},
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cluster: {
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disconnect: { promisify: true, args: 0 },
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},
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console: { skip: true },
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crypto: {
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DEFAULT_ENCODING: { constant: false },
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pseudoRandomBytes: { promisify: true, syncIfNoCallback: true, args: 1 },
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randomBytes: { promisify: true, syncIfNoCallback: true, args: 1 },
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randomFill: { args: 1 },
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},
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dns: {
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// XXX: Resolver could be wrapped...
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ADNAME: { skip: true },
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lookup: { promisify: true, args: 1 },
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lookupService: { promisify: true, args: 2, cb:['hostname','service'] },
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resolve: { promisify: true, args: 1 },
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resolve4: { promisify: true, args: 1 },
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resolve6: { promisify: true, args: 1 },
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resolveAny: { promisify: true, args: 1 },
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resolveCname: { promisify: true, args: 1 },
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resolveMx: { promisify: true, args: 1 },
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resolveNaptr: { promisify: true, args: 1 },
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resolveNs: { promisify: true, args: 1 },
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resolvePtr: { promisify: true, args: 1 },
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resolveSoa: { promisify: true, args: 1 },
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resolveSrv: { promisify: true, args: 1 },
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resolveTxt: { promisify: true, args: 1 },
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reverse: { promisify: true, args: 1 },
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},
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domain: {
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// XXX Domain#bind and Domain#intercept should be promisified
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},
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events: {
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skip: true,
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},
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fs: {
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access: { args: 1 },
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appendFile: { args: 2 },
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copyFile: { args: 2 },
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exists: { promisify: true, noError: true },
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mkdir: { args: 1 },
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mkdtemp: { args: 1 },
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open: { args: 2 },
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read: { cb: ['read', 'buffer'] },
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readdir: { args: 1 },
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readlink: { args: 1 },
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readFile: { args: 1 },
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realpath: { args: 1 },
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symlink: { args: 2 },
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write: { cb: ['written', 'buffer'] },
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writeFile: { args: 2 },
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},
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http: {
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STATUS_CODES: { constant: true },
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// XXX ClientRequest#setTimeout should be promisified
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// XXX IncomingMessage#setTimeout should be promisified
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// XXX Server#listen, Server#close, and Server#setTimeout
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// should be promisified
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// XXX ServerResponse#setTimeout should be promisified
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request: { promisify: true, returnsObject: true, args: 1 },
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get: { promisify: true, returnsObject: true, args: 1 },
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},
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http2: {
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optional: true,
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},
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https: {
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// XXX Server#listen, Server#close, and Server#setTimeout
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// should be promisified
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request: { promisify: true, returnsObject: true, args: 1 },
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get: { promisify: true, returnsObject: true, args: 1 },
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},
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inspector: {
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optional: true,
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skip: true,
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},
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net: {
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// XXX Server#listen, Server#close, Server#getConnections
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// should be promisified
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// XXX Socket#write, Socket#setTimeout should be promisified
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},
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os: { skip: true },
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path: { skip: true },
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perf_hooks: { optional: true, skip: true },
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process: {
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nextTick: { promisify: true, args: 0 }
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},
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punycode: { optional: true, skip: true },
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querystring: { skip: true },
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readline: {
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// XXX Interface#question should be promisified
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},
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repl: { skip: true },
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stream: {
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super_: { skip: true },
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// XXX Writable#write and Writable#end should be promisified
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// XXX same for Duplex and Transform? inheritance unclear.
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// what about _read/_write/_transform/_flush for implementers?
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},
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string_decoder: { skip: true },
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timers: {
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setImmediate: { promisify: true, callbackIsFirstArg: true, noError: true },
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setTimeout: { promisify: true, callbackIsFirstArg: true, noError: true },
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},
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tls: {
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connect: { promisify: true, returnsObject: true, args: 1 },
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createServer: { promisify: true, returnsObject: true, args: 1 },
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},
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tty: {
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skip: true
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// should tty.ReadStream and tty.WriteStream be promisified?
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// (process.stdin / process.stdout)
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},
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dgram: {
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// note that createSocket takes a listener, not a callback
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// XXX Socket#send and Socket#bind should be promisified
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},
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url: { skip: true },
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util: {
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pump: { promisify: true, args: 2 }
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},
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v8: { optional: true, skip: true },
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vm: { skip: true },
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zlib: {
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codes: { constant: true },
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deflate: { promisify: true, args: 1 },
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deflateRaw: { promisify: true, args: 1 },
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gzip: { promisify: true, args: 1 },
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gunzip: { promisify: true, args: 1 },
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inflate: { promisify: true, args: 1 },
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inflateRaw: { promisify: true, args: 1 },
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unzip: { promisify: true, args: 1 },
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},
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};
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var sorted = function(arr) {
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var s = arr.slice(0);
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s.sort();
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return s;
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}
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sorted(Object.keys(packages)).forEach(function(pkgname) {
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var pkgopts = packages[pkgname] || {};
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var script = [];
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var emit = function(l) { script.push(l); };
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var m;
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if (pkgname==='process') {
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m = process;
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} else if (pkgopts.optional) {
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// Package is not present in older versions of node.
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emit('var '+pkgname+' = {};');
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emit('try { '+pkgname+' = require("'+pkgname+'"); } catch (e) { }');
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m = require(pkgname);
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} else {
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emit('var '+pkgname+' = require("'+pkgname+'");');
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m = require(pkgname);
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}
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if (pkgopts.skip) {
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emit('module.exports = '+pkgname+';');
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} else {
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emit('var promisify = require("./_promisify.js");');
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emit('var bind = function(c, f) { return f && f.bind(c); };');
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emit('Object.defineProperties(module.exports, {');
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sorted(Object.keys(m)).forEach(function(prop) {
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var opts = pkgopts[prop] || {};
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// skip private properties
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if (opts.skip !== undefined ? opts.skip : /^_/.test(prop)) {
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emit(' //'+prop+': // skipping');
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return;
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}
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var out = ' '+prop+': { enumerable: true, ';
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// Is this a function?
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var caps = /^[A-Z]/.test(prop);
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var isFunction = typeof(m[prop]) === 'function';
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var isConstant = opts.constant!==undefined ? opts.constant :
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isFunction ?
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(opts.bind !== undefined ? opts.bind===false : caps) :
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caps;
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if (isConstant) {
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emit(out+'value: '+pkgname+'.'+prop+' },');
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return;
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}
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if (!isFunction) {
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// add getters & setters
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emit(out+'get: function() { return '+pkgname+'.'+prop+'; }, '+
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'set: function(v) { '+pkgname+'.'+prop+' = v; } },');
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return;
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}
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// Is this a async function?
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var isAsync = (typeof(m[prop+'Sync']) === 'function');
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if (opts.promisify) { isAsync = true; }
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if (!isAsync || opts.promisify === false) {
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emit(out+'value: bind('+pkgname+', '+pkgname+'.'+prop+') },');
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return;
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}
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// OK, this is very likely an async function!
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// number of mandatory options (may be additional optional args)
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var nargs = opts.args!==undefined ? opts.args :
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(typeof(m[prop+'Sync']) === 'function') ?
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m[prop+'Sync'].length : m[prop].length;
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var options = {}, emitOptions = false;
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if (opts.cb) {
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options.pattern = opts.cb;
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emitOptions = true;
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}
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if (opts.noError) {
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options.noError = true;
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emitOptions = true;
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}
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if (opts.returnsObject) {
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options.returnsObject = true;
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emitOptions = true;
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}
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if (opts.callbackIsFirstArg) {
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options.callbackIsFirstArg = true;
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nargs = 0;
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emitOptions = true;
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}
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var optString = emitOptions ? ', '+JSON.stringify(options) : '';
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emit(out+'value: promisify('+pkgname+', '+pkgname+'.'+prop+', '+nargs+optString+') },');
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if (opts.syncIfNoCallback) {
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emit(out.replace(/:/,"Sync:")+'value: '+pkgname+'.'+prop+'.bind('+pkgname+') },');
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}
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});
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emit('});');
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}
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// Write out this wrapped package!
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fs.writeFileSync(path.join(__dirname,'..',pkgname+'.js'),
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script.join('\n'), 'utf-8');
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});
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