Prettier 2.7: new --cache CLI option and TypeScript 4.7 syntax
prettier.io
@__sosukesuzuki,
@PrettierCode
Highlights – quoting the blog post:
- This release includes a new
--cache CLI option. Enabling this option will use some attributes as cache keys and format files only if they have changed. This could dramatically improve CLI performance.
- We’ve also added support for formatting TypeScript 4.7 syntax!
Deno 1.23: no type-checking by default (deno run, deno eval, deno cache) and more
deno.com
@biwanczuk,
@davidsherret,
github/ry,
@kt3k,
@satyarohith_,
@deno_land
- No type-checking by default in
deno run, deno eval, and deno cache
- File watcher watches dynamic imports
- Updates to
deno task
- Updates to
deno fmt
deno info supports --config and --no-config flags- REPL: Use Ctrl-S to insert newlines into your input
- SIGINT and SIGBREAK signal listening support on Windows
- Support for
"deflate-raw" in CompressionStream and DecompressionStream
- TypeScript 4.7
- Changes to
flags standard module (which parses command line arguments)
- Changes to
assertThrows and assertRejects
Add 90+ code assists and refactorings to Visual Studio Code
marketplace.visualstudio.com
Sponsor
Refactor JavaScript, TypeScript, React and Vue.js code. With the P42 JavaScript Assistant.
Using web streams on Node.js
2ality.com
@2ality
Web streams are a new standard that works on browsers, Node.js and Deno. For example, the Response returned by fetch() has a property .body with a web stream.
The blog post is a tutorial for using web streams with many code examples. It focuses on Node.js but most of the content also applies to other platforms.
The JavaScript block statement
www.webpro.nl
@webprolific
Nested block statements enable you to reuse variable names. Which can be helpful – e.g. in tests and in consoles:
function test() {
const type = 'some';
{
const thing = getThing(type, 1);
assert.equal(thing, 1);
}
{
const thing = getThing(type, 2);
assert.equal(thing, 2);
}
}
Use esm-import-transformer for “isomorphic-ish” ECMAScript modules
www.zachleat.com
@zachleat
The utility esm-import-transformer lets you search and replace module specifiers in JavaScript source code. One use case is to translate code for Node.js to code that works on browsers:
// Before
import {html, css, LitElement} from "lit";
// After
import {html, css, LitElement} from "https://cdn.jsdelivr.net/gh/lit/dist@2/core/lit-core.min.js";
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