Add basic post and anchor skeletons

src/components/Skeleton.tsx

@@ -0,0 +1,102 @@
+import {View} from 'react-native'
+
+import {
+  atoms as a,
+  flatten,
+  type TextStyleProp,
+  useAlf,
+  useTheme,
+  type ViewStyleProp,
+} from '#/alf'
+import {normalizeTextStyles} from '#/alf/typography'
+
+type SkeletonProps = {
+  blend?: boolean
+}
+
+export function Text({blend, style}: TextStyleProp & SkeletonProps) {
+  const {fonts, flags, theme: t} = useAlf()
+  const {width, ...flattened} = flatten(style)
+  const {lineHeight = 14, ...rest} = normalizeTextStyles(
+    [a.text_sm, a.leading_snug, flattened],
+    {
+      fontScale: fonts.scaleMultiplier,
+      fontFamily: fonts.family,
+      flags,
+    },
+  )
+  return (
+    <View
+      style={[a.flex_1, {maxWidth: width, paddingVertical: lineHeight * 0.15}]}>
+      <View
+        style={[
+          a.rounded_md,
+          t.atoms.bg_contrast_25,
+          {
+            height: lineHeight * 0.7,
+            opacity: blend ? 0.6 : 1,
+          },
+          rest,
+        ]}
+      />
+    </View>
+  )
+}
+
+export function Circle({
+  size,
+  blend,
+  style,
+}: ViewStyleProp & {size: number} & SkeletonProps) {
+  const t = useTheme()
+  return (
+    <View
+      style={[
+        a.rounded_full,
+        t.atoms.bg_contrast_25,
+        {
+          width: size,
+          height: size,
+          opacity: blend ? 0.6 : 1,
+        },
+        style,
+      ]}
+    />
+  )
+}
+
+export function Pill({
+  size,
+  blend,
+  style,
+}: ViewStyleProp & {size: number} & SkeletonProps) {
+  const t = useTheme()
+  return (
+    <View
+      style={[
+        a.rounded_full,
+        t.atoms.bg_contrast_25,
+        {
+          width: size * 1.618,
+          height: size,
+          opacity: blend ? 0.6 : 1,
+        },
+        style,
+      ]}
+    />
+  )
+}
+
+export function Col({
+  children,
+  style,
+}: ViewStyleProp & {children?: React.ReactNode}) {
+  return <View style={[a.flex_1, style]}>{children}</View>
+}
+
+export function Row({
+  children,
+  style,
+}: ViewStyleProp & {children?: React.ReactNode}) {
+  return <View style={[a.flex_row, style]}>{children}</View>
+}