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# Deno Node compatibility
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This module is meant to have a compatibility layer for the
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[NodeJS standard library](https://nodejs.org/docs/latest-v12.x/api/).
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2019-11-12 15:51:14 -05:00
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2020-01-15 14:13:12 -05:00
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**Warning**: Any function of this module should not be referred anywhere in the
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deno standard library as it's a compatiblity module.
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2019-11-19 16:44:59 -05:00
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2020-01-15 14:13:12 -05:00
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## Supported Builtins
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- [ ] assert
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- [ ] buffer
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- [ ] child_process
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- [ ] cluster
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- [ ] console
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- [ ] crypto
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- [ ] dgram
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- [ ] dns
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- [x] events
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- [x] fs _partly_
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- [ ] http
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- [ ] http2
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- [ ] https
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- [x] module
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- [ ] net
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- [x] os _partly_
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- [x] path
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- [ ] perf_hooks
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- [x] process _partly_
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- [x] querystring
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- [ ] readline
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- [ ] repl
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- [ ] stream
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- [ ] string_decoder
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- [ ] sys
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- [x] timers
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- [ ] tls
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- [ ] tty
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- [ ] url
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- [x] util _partly_
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- [ ] ~~v8~~ _can't implement_
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- [ ] vm
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- [ ] worker_threads
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- [ ] zlib
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* [x] node globals _partly_
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### Deprecated
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These builtins are deprecated in NodeJS v13 and will probably not be polyfilled:
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- constants
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- domain
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- freelist
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- punycode
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### Experimental
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These builtins are experimental in NodeJS v13 and will not be polyfilled until
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they are stable:
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- async_hooks
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- inspector
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- policies
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- report
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- trace_events
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- wasi
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2019-11-19 16:44:59 -05:00
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## CommonJS Module Loading
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`createRequire(...)` is provided to create a `require` function for loading CJS
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modules. It also sets supported globals.
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```ts
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import { createRequire } from "https://deno.land/std/node/module.ts";
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const require = createRequire(import.meta.url);
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// Loads native module polyfill.
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const path = require("path");
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// Loads extensionless module.
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const cjsModule = require("./my_mod");
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// Visits node_modules.
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const leftPad = require("left-pad");
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```
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