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What forces layout / reflow

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.

Element APIs

Getting box metrics

• elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent

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import { PublicFormContext, SubmissionHandler } from "vee-validate";

export function createSubmitHandler<
  TValues extends Record<string, any> = Record<string, any>,
  TContext extends Omit<PublicFormContext<TValues>, "handleSubmit"> = Omit<
    PublicFormContext<TValues>,
    "handleSubmit"
  >
>(

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Technical overview

A basic Option type

// Option.ts

// definition
export class None {
  readonly tag: 'None' = 'None'

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  // Available variables:
  // - Machine
  // - interpret
  // - assign
  // - send
  // - sendParent
  // - spawn
  // - raise
  // - actions

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  // Available variables:
  // - Machine
  // - interpret
  // - assign
  // - send
  // - sendParent
  // - spawn
  // - raise
  // - actions

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  // Available variables:
  // - Machine
  // - interpret
  // - assign
  // - send
  // - sendParent
  // - spawn
  // - raise
  // - actions

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{
  country: [
    [0, "Любая"],
    [1, "Россия"],
    [2, "Украина"],
    [3, "Беларусь"],
    [4, "Казахстан"],
    [5, "Азербайджан"],
    [6, "Армения"],
    [7, "Грузия"],

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