flutter_helper_utils

Use when upgrading a Flutter project from flutter_helper_utils 8.x (or 7.x) to 9.x, or when code hits removed v8 APIs after a version bump - notifier utilities gone, addOpacity/addAlpha undefined, pReplacement/pNamed undefined, dataWhen undefined, core.dart/colors.dart/widgets.dart imports failing, or dart_helper_utils v6 conflicts.

Use when building responsive/adaptive Flutter layouts or list UIs with the flutter_helper_utils package - PlatformTypeProvider setup, Breakpoint detection (watchBreakpoint/readBreakpoint, mobile/tablet/desktop), BreakpointLayoutBuilder, TypedListView/TypedSliverList, buildListView on iterables, pull-to-refresh, infinite scroll (onEndReached), item spacing/separators, empty states, or scrollCacheExtent tuning.

Use when Flutter code parses, converts, or manipulates colors with the flutter_helper_utils package - string-to-Color parsing (hex/rgb/hsl/hwb/named CSS), opacity and channel changes (setOpacity, setAlpha), darken/lighten/shade/tint, WCAG contrast and accessibility checks, color-blindness simulation, color harmonies, toHex output, or reading Colors from JSON/Map config (toColor, tryGetColor).

Use when bumping the flutter_helper_utils package version in a project or auditing an upgrade's impact - detecting the installed version, sequencing migration hops across v7/v8/v8.5/v9, patch-level 9.x bumps, or answering "is it safe to upgrade flutter_helper_utils".

Use when writing or reviewing Flutter code that uses the flutter_helper_utils package - BuildContext theme/text/colorScheme getters, MediaQuery shortcuts (sizePx, widthPx, textScaler), navigation helpers (pushPage, popPage, forcePopPage, dismissAllPopups, routeArgs), platform detection (PlatformEnv, isMobileWeb), AsyncSnapshot.when pattern matching, focus/scaffold-messenger/directionality helpers, num/Size sugar, or deciding between the main import and sugar.dart.