proposal-hashbang
proposal-symbols-as-weakmap-keys
| proposal-hashbang | proposal-symbols-as-weakmap-keys | |
|---|---|---|
| 8 | 4 | |
| 133 | 90 | |
| - | - | |
| 0.0 | 0.0 | |
| almost 2 years ago | over 1 year ago | |
| HTML | ||
| - | MIT License |
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proposal-hashbang
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Javascript, the GOAT of programming languages that will take over the world in 2024
Before ECMAScript 2023 (ES14), executing a JavaScript file directly from the command line required manually specifying the interpreter path in the first line of the module. This process could vary depending on the operating system and Node.js installation.ES14 standardizes the use of hashbangs (#!) in JavaScript modules, enabling direct execution without the need for explicit interpreter invocation. The hashbang syntax is a simple convention that indicates the interpreter to be used for executing a module. It consists of a shebang (#!) followed by the path to the interpreter and optionally any arguments. For a JavaScript file, the hashbang line typically includes the path to the Node.js executable.
- What's new in ES2023?
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ES2023 features list!
https://github.com/tc39/proposal-hashbang has some details.
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JavaScript's New Features: Exploring the Latest Additions to the Language
Hashbang Grammar
- ES2023 candidate source code + spec
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Updates from the 91st TC39 meeting
Hashbang Grammar: match de-facto usage in some CLI JS hosts that allow for #! Shebangs / Hashbang.
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cmru is a command runner that allows you to describe commands with javascript.
But if you just wanted to execute it directly then you could use a shebang because everything after the bang is interpreted and not the bang its self. Most js engines allow this in some form. Here is a proposal to standardize it. https://github.com/tc39/proposal-hashbang
- Released Google/zx – tons of DX improvements and more
proposal-symbols-as-weakmap-keys
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JavaScript's New Features: Exploring the Latest Additions to the Language
Symbols as WeakMap keys
- ES2023 candidate source code + spec
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Updates from the 94th TC39 meeting
Symbols as WeakMap keys: Permit Symbols as keys in WeakMaps, entries in WeakSets and WeakRefs, and registered in FinalizationRegistries
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Updates from 82nd meeting of TC39
Symbols as WeakMap keys: This proposal extends the WeakMap API to allow usage of unique Symbols as keys.
What are some alternatives?
sh - Python process launching
proposal-symbol-predicates - A proposal to introduce ways to differentiate symbols
clii - Easily build a cli app.
proposal-arraybuffer-transfer - Proposal to add ArrayBuffer.prototype.transfer
proposal-array-find-from-last - Proposal for Array.prototype.findLast and Array.prototype.findLastIndex.
proposal-symbol-proto - TC39 proposal for mitigating prototype pollution
proposal-object-pick-or-omit - Ergonomic Dynamic Object Restructuring. [Moved to: https://github.com/tc39/proposal-object-pick-or-omit]
proposal-change-array-by-copy - Provides additional methods on Array.prototype and TypedArray.prototype to enable changes on the array by returning a new copy of it with the change.
proposal-import-assertions - Proposal for syntax to import ES modules with assertions [Moved to: https://github.com/tc39/proposal-import-attributes]
proposal-async-context - Async Context for JavaScript
proposal-private-methods - Private methods and getter/setters for ES6 classes
proposal-accessible-object-hasownproperty - Object.hasOwn() proposal for ECMAScript