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Doc update and changelog entry for #3461

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Lovell Fuller
2023-04-07 11:21:15 +01:00
parent a4c6eba7d4
commit e87204b92c
6 changed files with 47 additions and 17 deletions
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13
lib/operation.js
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@@ -406,7 +406,14 @@ function flatten (options) {
}
/**
* Unflatten - add an alpha channel to the image if required, and make white pixels fully transparent. Alpha for non-white pixels will be unchanged/opaque.
* Ensure the image has an alpha channel
* with all white pixel values made fully transparent.
*
* Existing alpha channel values for non-white pixels remain unchanged.
*
* This feature is experimental and the API may change.
*
* @since 0.32.1
*
* @example
* await sharp(rgbInput)
@@ -419,8 +426,8 @@ function flatten (options) {
* .unflatten()
* .toBuffer();
*/
function unflatten (options) {
this.options.unflatten = is.bool(options) ? options : true;
function unflatten () {
this.options.unflatten = true;
return this;
}