I no longer mantain this list. There are lots of other very comprehensive JavaScript link lists out there. Please see those, instead (Google "awesome JavaScript" for a start).
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// when T is any|unknown, Y is returned, otherwise N | |
type IsAnyUnknown<T, Y, N> = unknown extends T ? Y : N; | |
// when T is never, Y is returned, otherwise N | |
type IsNever<T, Y = true, N = false> = [T] extends [never] ? Y : N; | |
// when T is a tuple, Y is returned, otherwise N | |
// valid tuples = [string], [string, boolean], | |
// invalid tuples = [], string[], (string | number)[] |
All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.
Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.
elem.offsetLeft
,elem.offsetTop
,elem.offsetWidth
,elem.offsetHeight
,elem.offsetParent
The package that linked you here is now pure ESM. It cannot be require()
'd from CommonJS.
This means you have the following choices:
- Use ESM yourself. (preferred)
Useimport foo from 'foo'
instead ofconst foo = require('foo')
to import the package. You also need to put"type": "module"
in your package.json and more. Follow the below guide. - If the package is used in an async context, you could use
await import(…)
from CommonJS instead ofrequire(…)
. - Stay on the existing version of the package until you can move to ESM.
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