Firefox 152 release notes for developers

Screenshot of Firefox developer tools showing the Inspector panel with HTML markup and CSS rules, overlaid by the Firefox logo and the text “Firefox 152”.

The release adds the field-sizing CSS property for sizing form controls to their content, Notification actions in showNotification(), the unadjustedMovement option for requestPointerLock(), a pseudoElement option for getAnimations(), firstInterimResponseStart and finalResponseHeadersStart resource timing properties, the side property on SVGTextPathElement, and experimental text module imports with { type: "text" }.

developer.mozilla.org/en-US/docs/Mozilla/Firefox/Releases/152