docs(TouchableWithoutFeedback): fix onLongPress timing to 500ms

[Cjgfree123]

Summary
Update TouchableWithoutFeedback docs to state onLongPress fires after 500ms (was 370ms).

Motivation
The 370ms value is incorrect and inconsistent with the current press system defaults.

Changes

docs/touchablewithoutfeedback.md: replace “370 milliseconds” with “500 milliseconds”.

Test Plan

Ran yarn lint / yarn prettier in ./website.

Verified copy for accuracy; no runtime changes.

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[Cjgfree123]

Signed the CLA. Thanks!

Hi @Cjgfree123!

Thank you for your pull request and welcome to our community.

Action Required

In order to merge any pull request (code, docs, etc.), we require contributors to sign our Contributor License Agreement, and we don't seem to have one on file for you.

Process

In order for us to review and merge your suggested changes, please sign at https://code.facebook.com/cla. If you are contributing on behalf of someone else (eg your employer), the individual CLA may not be sufficient and your employer may need to sign the corporate CLA.

Once the CLA is signed, our tooling will perform checks and validations. Afterwards, the pull request will be tagged with CLA signed. The tagging process may take up to 1 hour after signing. Please give it that time before contacting us about it.

If you have received this in error or have any questions, please contact us at cla@meta.com. Thanks!

[Simek]

Hey @Cjgfree123, thanks for the update! 👍

Can you provide a reference from core repo code to confirm that 500 ms is the correct value?

[Cjgfree123]

• https://github.com/facebook/react-native/blob/main/packages/react-native/Libraries/Components/Touchable/TouchableWithoutFeedback.js
• https://github.com/facebook/react-native/blob/main/packages/react-native/Libraries/Pressability/Pressability.js

// packages/react-native/Libraries/Components/Touchable/TouchableWithoutFeedback.js

const pressabilityConfig = useMemo(
    () => ({
      ...
      delayLongPress: delayLongPress,
      delayPressIn: delayPressIn,
      onLongPress: onLongPress,
      onPress: onPress,
      onPressIn: onPressIn,
    }),
    [...]
);

const eventHandlers = new Pressability(pressabilityConfig).getEventHandlers()



// packages/react-native/Libraries/Pressability/Pressability.js

const DEFAULT_LONG_PRESS_DELAY_MS = 500;

_createEventHandlers() {
  onResponderGrant() {
    /**
     * Equivalent to: Math.max(0, this._config.delayPressIn ?? 0)
     *
     * If the caller does not pass props.delayPressIn, the computed delayPressIn
     * value here will be 0.
     */
    const delayPressIn = normalizeDelay(this._config.delayPressIn);

    // ...

    /**
     * Equivalent to: Math.max(10, this._config.delayLongPress ?? 500 - delayPressIn)
     *
     * If the caller does not pass props.delayPressIn and props.delayLongPress,
     * this effectively becomes: Math.max(10, 500) = 500ms.
     *
     * Therefore, by default, onLongPress fires after 500ms.
     */
    const delayLongPress = normalizeDelay(
      this._config.delayLongPress,
      10,
      DEFAULT_LONG_PRESS_DELAY_MS - delayPressIn,
    );

    this._longPressDelayTimeout = setTimeout(() => {
      this._handleLongPress(event);
    }, delayLongPress + delayPressIn);
  }
}

function normalizeDelay(
  delay: ?number,
  min: number = 0,
  fallback: number = 0,
): number {
  return Math.max(min, delay ?? fallback);
}

[Simek]

Thanks for linking the reference @Cjgfree123, however, I think that 370ms delay is correct in there since it's 500ms (DEFAULT_LONG_PRESS_DELAY_MS ) - 130ms (DEFAULT_MIN_PRESS_DURATION):

• https://github.com/facebook/react-native/blob/e53955e508ab84e422d67b50ac2f52f11e3160ee/packages/react-native/Libraries/Pressability/Pressability.js#L778-L782

We probably should explain it better, where the values comes from (how it's calculated) and mention also minimal press duration, instead of changing the value.