fix: Fix for expressionTo with Spread and Methods

# Conflicts:
#	src/utils/expressionTo.js

src/utils/__tests__/__snapshots__/resolveGenericTypeAnnotations-test.js.snap

@@ -0,0 +1,86 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`resolveGenericTypeAnnotation resolves type 1`] = `
+Node {
+  "callProperties": Array [],
+  "end": 57,
+  "exact": false,
+  "indexers": Array [],
+  "inexact": false,
+  "internalSlots": Array [],
+  "loc": SourceLocation {
+    "end": Position {
+      "column": 34,
+      "line": 3,
+    },
+    "filename": undefined,
+    "identifierName": undefined,
+    "start": Position {
+      "column": 21,
+      "line": 3,
+    },
+  },
+  "properties": Array [
+    Node {
+      "end": 55,
+      "key": Node {
+        "end": 47,
+        "loc": SourceLocation {
+          "end": Position {
+            "column": 24,
+            "line": 3,
+          },
+          "filename": undefined,
+          "identifierName": "x",
+          "start": Position {
+            "column": 23,
+            "line": 3,
+          },
+        },
+        "name": "x",
+        "start": 46,
+        "type": "Identifier",
+      },
+      "kind": "init",
+      "loc": SourceLocation {
+        "end": Position {
+          "column": 32,
+          "line": 3,
+        },
+        "filename": undefined,
+        "identifierName": undefined,
+        "start": Position {
+          "column": 23,
+          "line": 3,
+        },
+      },
+      "method": false,
+      "optional": false,
+      "proto": false,
+      "start": 46,
+      "static": false,
+      "type": "ObjectTypeProperty",
+      "value": Node {
+        "end": 55,
+        "loc": SourceLocation {
+          "end": Position {
+            "column": 32,
+            "line": 3,
+          },
+          "filename": undefined,
+          "identifierName": undefined,
+          "start": Position {
+            "column": 26,
+            "line": 3,
+          },
+        },
+        "start": 49,
+        "type": "StringTypeAnnotation",
+      },
+      "variance": null,
+    },
+  ],
+  "start": 44,
+  "type": "ObjectTypeAnnotation",
+}
+`;

src/utils/__tests__/isUnreachableFlowType-test.js

@@ -0,0 +1,20 @@
+import { expression, statement } from '../../../tests/utils';
+import isUnreachableFlowType from '../isUnreachableFlowType';
+
+describe('isUnreachableFlowType', () => {
+  it('considers Identifier as unreachable', () => {
+    expect(isUnreachableFlowType(expression('foo'))).toBe(true);
+  });
+
+  it('considers ImportDeclaration as unreachable', () => {
+    expect(isUnreachableFlowType(statement('import x from "";'))).toBe(true);
+  });
+
+  it('considers CallExpression as unreachable', () => {
+    expect(isUnreachableFlowType(expression('foo()'))).toBe(true);
+  });
+
+  it('considers VariableDeclaration not as unreachable', () => {
+    expect(isUnreachableFlowType(statement('const x = 1;'))).toBe(false);
+  });
+});

src/utils/__tests__/resolveGenericTypeAnnotations-test.js

@@ -0,0 +1,23 @@
+import { statement, noopImporter } from '../../../tests/utils';
+import resolveGenericTypeAnnotation from '../resolveGenericTypeAnnotation';
+
+describe('resolveGenericTypeAnnotation', () => {
+  it('resolves type', () => {
+    const code = `
+        var x: Props;
+        type Props = { x: string };
+    `;
+    expect(
+      resolveGenericTypeAnnotation(
+        statement(code).get(
+          'declarations',
+          0,
+          'id',
+          'typeAnnotation',
+          'typeAnnotation',
+        ),
+        noopImporter,
+      ),
+    ).toMatchSnapshot();
+  });
+});

src/utils/expressionTo.js

@@ -50,14 +50,23 @@ function toArray(path: NodePath): Array<string> {
     } else if (t.Literal.check(node)) {
       result.push(node.raw);
       continue;
+    } else if (t.FunctionExpression.check(node)) {
+      result.push('<function>');
+      continue;
     } else if (t.ThisExpression.check(node)) {
       result.push('this');
       continue;
     } else if (t.ObjectExpression.check(node)) {
       const properties = path.get('properties').map(function (property) {
-        return (
-          toString(property.get('key')) + ': ' + toString(property.get('value'))
-        );
+        if (t.SpreadElement.check(property.node)) {
+          return `...${toString(property.get('argument'))}`;
+        } else {
+          return (
+            toString(property.get('key')) +
+            ': ' +
+            toString(property.get('value'))
+          );
+        }
       });
       result.push('{' + properties.join(', ') + '}');
       continue;