feat: 🐛support satisfies

Author: TyrealHu

__test__/__snapshot__/satisfies/index.ts

@@ -0,0 +1,132 @@
+const SatisfiesSnapshot = {
+  Normal: {
+    'type': 'Program',
+    'start': 0,
+    'end': 25,
+    'loc': {
+      'start': {
+        'line': 1,
+        'column': 0,
+        'index': 0
+      },
+      'end': {
+        'line': 1,
+        'column': 25,
+        'index': 25
+      }
+    },
+    'body': [
+      {
+        'type': 'VariableDeclaration',
+        'start': 0,
+        'end': 25,
+        'loc': {
+          'start': {
+            'line': 1,
+            'column': 0,
+            'index': 0
+          },
+          'end': {
+            'line': 1,
+            'column': 25,
+            'index': 25
+          }
+        },
+        'declarations': [
+          {
+            'type': 'VariableDeclarator',
+            'start': 6,
+            'end': 25,
+            'loc': {
+              'start': {
+                'line': 1,
+                'column': 6,
+                'index': 6
+              },
+              'end': {
+                'line': 1,
+                'column': 25,
+                'index': 25
+              }
+            },
+            'id': {
+              'type': 'Identifier',
+              'start': 6,
+              'end': 7,
+              'loc': {
+                'start': {
+                  'line': 1,
+                  'column': 6,
+                  'index': 6
+                },
+                'end': {
+                  'line': 1,
+                  'column': 7,
+                  'index': 7
+                }
+              },
+              'name': 'a'
+            },
+            'init': {
+              'type': 'TSSatisfiesExpression',
+              'start': 10,
+              'end': 25,
+              'loc': {
+                'start': {
+                  'line': 1,
+                  'column': 10,
+                  'index': 10
+                },
+                'end': {
+                  'line': 1,
+                  'column': 25,
+                  'index': 25
+                }
+              },
+              'expression': {
+                'type': 'Literal',
+                'start': 10,
+                'end': 11,
+                'loc': {
+                  'start': {
+                    'line': 1,
+                    'column': 10,
+                    'index': 10
+                  },
+                  'end': {
+                    'line': 1,
+                    'column': 11,
+                    'index': 11
+                  }
+                },
+                'value': 1,
+                'raw': '1'
+              },
+              'typeAnnotation': {
+                'type': 'TSAnyKeyword',
+                'start': 22,
+                'end': 25,
+                'loc': {
+                  'start': {
+                    'line': 1,
+                    'column': 22,
+                    'index': 22
+                  },
+                  'end': {
+                    'line': 1,
+                    'column': 25,
+                    'index': 25
+                  }
+                }
+              }
+            }
+          }
+        ],
+        'kind': 'const'
+      }
+    ],
+    'sourceType': 'module'
+  }
+}
+
+export default SatisfiesSnapshot

__test__/satisfies/index.test.ts

@@ -0,0 +1,24 @@
+import {
+  equalNode,
+  parseSourceAllowSatisfies,
+  parseSourceShouldThrowError
+} from '../utils'
+import SatisfiesSnapshot from '../__snapshot__/satisfies'
+
+describe('satisfies', function() {
+  it('normal', function() {
+    const node = parseSourceAllowSatisfies('const a = 1 satisfies any')
+
+    equalNode(node, SatisfiesSnapshot.Normal)
+  })
+
+  it('should error', function() {
+    const res = parseSourceShouldThrowError(
+      'const a = 1 satisfies any',
+      'Unexpected token',
+      '(1:12)'
+    )
+
+    expect(res).toBe(true)
+  })
+})

__test__/utils.ts

@@ -7,6 +7,10 @@ export const DtsParser = acorn.Parser.extend(tsPlugin({
   dts: true
 }))
 
+export const AllowSatisfiesParser = acorn.Parser.extend(tsPlugin({
+  allowSatisfies: true
+}))
+
 export function equalNode(node, snapshot) {
   expect(node).toEqual(snapshot)
 }
@@ -27,6 +31,14 @@ export function parseSource(input: string) {
   })
 }
 
+export function parseSourceAllowSatisfies(input: string) {
+  return AllowSatisfiesParser.parse(input, {
+    sourceType: 'module',
+    ecmaVersion: 'latest',
+    locations: true
+  })
+}
+
 export function parseSourceShouldThrowError(input: string, message: string, loc: string): boolean {
   try {
     Parser.parse(input, {