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node_modules/autoprefixer/lib/hacks/block-logical.js

@@ -0,0 +1,40 @@
+let Declaration = require('../declaration')
+
+class BlockLogical extends Declaration {
+  /**
+   * Use old syntax for -moz- and -webkit-
+   */
+  prefixed(prop, prefix) {
+    if (prop.includes('-start')) {
+      return prefix + prop.replace('-block-start', '-before')
+    }
+    return prefix + prop.replace('-block-end', '-after')
+  }
+
+  /**
+   * Return property name by spec
+   */
+  normalize(prop) {
+    if (prop.includes('-before')) {
+      return prop.replace('-before', '-block-start')
+    }
+    return prop.replace('-after', '-block-end')
+  }
+}
+
+BlockLogical.names = [
+  'border-block-start',
+  'border-block-end',
+  'margin-block-start',
+  'margin-block-end',
+  'padding-block-start',
+  'padding-block-end',
+  'border-before',
+  'border-after',
+  'margin-before',
+  'margin-after',
+  'padding-before',
+  'padding-after'
+]
+
+module.exports = BlockLogical