proposal-top-level-await
regexp-match-indices
proposal-top-level-await | regexp-match-indices | |
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13 | 1 | |
1,005 | 4 | |
- | - | |
7.0 | 0.0 | |
almost 3 years ago | over 1 year ago | |
HTML | TypeScript | |
Apache License 2.0 | Apache License 2.0 |
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proposal-top-level-await
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Unveiling Breakthroughs Found In The State Of JS 2022 Survey
For more info about this feature, you can refer to the official proposal repo.
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Write program in assembly, decompile to TypeScript, convert to JavaScript, run in Node
This one is Stage 4 (complete)
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Open Source Adventures: Episode 29: Using D3 with old school tooling to visualize Russian Tank Losses
But browsers don't support top-level await yet. So we need to put it all inside as async function.
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Configuring CommonJS & ES Modules for Node.js
Note that ESM is not “backwards” compatible with CJS: a CJS module cannot require() an ES Module; it is possible to use a dynamic import (await import()), but this is likely not what consumers expect (and, unlike ESM, CJS does not support Top-Level Await).
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ES2022 Preview: 10 Exciting JavaScript Language Features From 2021
top-level await feature for ES modules
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How to save fetch JSON result to global variable?
That said, ES2022 does introduce a top-level await that works in the top level scope, but only in modules, not global scope. So if in a module this could work:
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Node v14.8+: Top Level Async Await
With the latest node version(s) (v14.8+), we should be able to rewrite the above code to something like this. proposal-top-level-await
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What is a practical example of using a Promise? These Youtube tutorials are bogus
Now a days, you'll likely mostly use async/await. The few cases where you'll need the Promise API (then()'s etc.) is when you're outside of an async function. With the new top-level await feature coming to modules, you wouldn't even need it outside of async functions in module code which will make its usage even less common.
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Basic import question
The await is in top level. The top level await proposal is in stage 3. Currently, the browser support is also not good enough but should work in latest version of the google chrome browser.
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Rust's async isn't f#@king colored!
There is a proposal for top-level await in JS. I'm guessing this would effectively kinda do the same thing? Or am I wrong there?
regexp-match-indices
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ES2022 Preview: 10 Exciting JavaScript Language Features From 2021
The browser support for the RegExp match indices feature is currently limited (Dec 2021 usage: ~80%). In Node.js, you can activate the feature with the --harmony-regexp-match-indices flag, but it is disabled by default. You can use the RegExp match indices polyfill in the meantime.
What are some alternatives?
esbuild - An extremely fast bundler for the web
error-cause - An ES-spec-compliant shim/polyfill/replacement for the `.cause` property on all Error types that works as far down as ES3
Rollup - Next-generation ES module bundler
zx - A tool for writing better scripts
rust-async-bench - The cost of Rust async/await
webpack - A bundler for javascript and friends. Packs many modules into a few bundled assets. Code Splitting allows for loading parts of the application on demand. Through "loaders", modules can be CommonJs, AMD, ES6 modules, CSS, Images, JSON, Coffeescript, LESS, ... and your custom stuff.
nodejs-module-config-examples - A collection of Node.js module configurations for interoperability between CJS and ESM
proposal-regexp-match-indices - ECMAScript RegExp Match Indices
proposal-nullish-coalescing - Nullish coalescing proposal x ?? y
modules - Node.js Modules Team
web-libusb