Namespaced and TypeScript Enums (#1285)

Summary:
Pull Request resolved: https://github.com/facebook/yoga/pull/1285

Enums are currently exposed to the JS package as constants (e.g. `import {ERRATA_NONE} from 'yoga-layout'`).

This exports enums in the form of `import {Errata} from 'yoga-layout'` then `Errata.None`.

It would be more ergonomic for these to be string union based enums instead, but right now it is a pretty thin wrapper around the native API, we need ordinal values to do things with bit masks, and folks have wanted to serialize them before.

Reviewed By: yungsters

Differential Revision: D45570417

fbshipit-source-id: dbfd330e939051d0c16460a4d2a996f88f98875c

javascript/src/generated/YGEnums.ts

@@ -0,0 +1,208 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+// @generated by enums.py
+
+export enum Align {
+  Auto = 0,
+  FlexStart = 1,
+  Center = 2,
+  FlexEnd = 3,
+  Stretch = 4,
+  Baseline = 5,
+  SpaceBetween = 6,
+  SpaceAround = 7,
+}
+
+export enum Dimension {
+  Width = 0,
+  Height = 1,
+}
+
+export enum Direction {
+  Inherit = 0,
+  LTR = 1,
+  RTL = 2,
+}
+
+export enum Display {
+  Flex = 0,
+  None = 1,
+}
+
+export enum Edge {
+  Left = 0,
+  Top = 1,
+  Right = 2,
+  Bottom = 3,
+  Start = 4,
+  End = 5,
+  Horizontal = 6,
+  Vertical = 7,
+  All = 8,
+}
+
+export enum Errata {
+  None = 0,
+  StretchFlexBasis = 1,
+  All = 2147483647,
+  Classic = 2147483646,
+}
+
+export enum ExperimentalFeature {
+  WebFlexBasis = 0,
+  AbsolutePercentageAgainstPaddingEdge = 1,
+  FixAbsoluteTrailingColumnMargin = 2,
+}
+
+export enum FlexDirection {
+  Column = 0,
+  ColumnReverse = 1,
+  Row = 2,
+  RowReverse = 3,
+}
+
+export enum Gutter {
+  Column = 0,
+  Row = 1,
+  All = 2,
+}
+
+export enum Justify {
+  FlexStart = 0,
+  Center = 1,
+  FlexEnd = 2,
+  SpaceBetween = 3,
+  SpaceAround = 4,
+  SpaceEvenly = 5,
+}
+
+export enum LogLevel {
+  Error = 0,
+  Warn = 1,
+  Info = 2,
+  Debug = 3,
+  Verbose = 4,
+  Fatal = 5,
+}
+
+export enum MeasureMode {
+  Undefined = 0,
+  Exactly = 1,
+  AtMost = 2,
+}
+
+export enum NodeType {
+  Default = 0,
+  Text = 1,
+}
+
+export enum Overflow {
+  Visible = 0,
+  Hidden = 1,
+  Scroll = 2,
+}
+
+export enum PositionType {
+  Static = 0,
+  Relative = 1,
+  Absolute = 2,
+}
+
+export enum PrintOptions {
+  Layout = 1,
+  Style = 2,
+  Children = 4,
+}
+
+export enum Unit {
+  Undefined = 0,
+  Point = 1,
+  Percent = 2,
+  Auto = 3,
+}
+
+export enum Wrap {
+  NoWrap = 0,
+  Wrap = 1,
+  WrapReverse = 2,
+}
+
+const constants = {
+  ALIGN_AUTO: Align.Auto,
+  ALIGN_FLEX_START: Align.FlexStart,
+  ALIGN_CENTER: Align.Center,
+  ALIGN_FLEX_END: Align.FlexEnd,
+  ALIGN_STRETCH: Align.Stretch,
+  ALIGN_BASELINE: Align.Baseline,
+  ALIGN_SPACE_BETWEEN: Align.SpaceBetween,
+  ALIGN_SPACE_AROUND: Align.SpaceAround,
+  DIMENSION_WIDTH: Dimension.Width,
+  DIMENSION_HEIGHT: Dimension.Height,
+  DIRECTION_INHERIT: Direction.Inherit,
+  DIRECTION_LTR: Direction.LTR,
+  DIRECTION_RTL: Direction.RTL,
+  DISPLAY_FLEX: Display.Flex,
+  DISPLAY_NONE: Display.None,
+  EDGE_LEFT: Edge.Left,
+  EDGE_TOP: Edge.Top,
+  EDGE_RIGHT: Edge.Right,
+  EDGE_BOTTOM: Edge.Bottom,
+  EDGE_START: Edge.Start,
+  EDGE_END: Edge.End,
+  EDGE_HORIZONTAL: Edge.Horizontal,
+  EDGE_VERTICAL: Edge.Vertical,
+  EDGE_ALL: Edge.All,
+  ERRATA_NONE: Errata.None,
+  ERRATA_STRETCH_FLEX_BASIS: Errata.StretchFlexBasis,
+  ERRATA_ALL: Errata.All,
+  ERRATA_CLASSIC: Errata.Classic,
+  EXPERIMENTAL_FEATURE_WEB_FLEX_BASIS: ExperimentalFeature.WebFlexBasis,
+  EXPERIMENTAL_FEATURE_ABSOLUTE_PERCENTAGE_AGAINST_PADDING_EDGE: ExperimentalFeature.AbsolutePercentageAgainstPaddingEdge,
+  EXPERIMENTAL_FEATURE_FIX_ABSOLUTE_TRAILING_COLUMN_MARGIN: ExperimentalFeature.FixAbsoluteTrailingColumnMargin,
+  FLEX_DIRECTION_COLUMN: FlexDirection.Column,
+  FLEX_DIRECTION_COLUMN_REVERSE: FlexDirection.ColumnReverse,
+  FLEX_DIRECTION_ROW: FlexDirection.Row,
+  FLEX_DIRECTION_ROW_REVERSE: FlexDirection.RowReverse,
+  GUTTER_COLUMN: Gutter.Column,
+  GUTTER_ROW: Gutter.Row,
+  GUTTER_ALL: Gutter.All,
+  JUSTIFY_FLEX_START: Justify.FlexStart,
+  JUSTIFY_CENTER: Justify.Center,
+  JUSTIFY_FLEX_END: Justify.FlexEnd,
+  JUSTIFY_SPACE_BETWEEN: Justify.SpaceBetween,
+  JUSTIFY_SPACE_AROUND: Justify.SpaceAround,
+  JUSTIFY_SPACE_EVENLY: Justify.SpaceEvenly,
+  LOG_LEVEL_ERROR: LogLevel.Error,
+  LOG_LEVEL_WARN: LogLevel.Warn,
+  LOG_LEVEL_INFO: LogLevel.Info,
+  LOG_LEVEL_DEBUG: LogLevel.Debug,
+  LOG_LEVEL_VERBOSE: LogLevel.Verbose,
+  LOG_LEVEL_FATAL: LogLevel.Fatal,
+  MEASURE_MODE_UNDEFINED: MeasureMode.Undefined,
+  MEASURE_MODE_EXACTLY: MeasureMode.Exactly,
+  MEASURE_MODE_AT_MOST: MeasureMode.AtMost,
+  NODE_TYPE_DEFAULT: NodeType.Default,
+  NODE_TYPE_TEXT: NodeType.Text,
+  OVERFLOW_VISIBLE: Overflow.Visible,
+  OVERFLOW_HIDDEN: Overflow.Hidden,
+  OVERFLOW_SCROLL: Overflow.Scroll,
+  POSITION_TYPE_STATIC: PositionType.Static,
+  POSITION_TYPE_RELATIVE: PositionType.Relative,
+  POSITION_TYPE_ABSOLUTE: PositionType.Absolute,
+  PRINT_OPTIONS_LAYOUT: PrintOptions.Layout,
+  PRINT_OPTIONS_STYLE: PrintOptions.Style,
+  PRINT_OPTIONS_CHILDREN: PrintOptions.Children,
+  UNIT_UNDEFINED: Unit.Undefined,
+  UNIT_POINT: Unit.Point,
+  UNIT_PERCENT: Unit.Percent,
+  UNIT_AUTO: Unit.Auto,
+  WRAP_NO_WRAP: Wrap.NoWrap,
+  WRAP_WRAP: Wrap.Wrap,
+  WRAP_WRAP_REVERSE: Wrap.WrapReverse,
+}
+export default constants