fix corner cases in properties (#5178)

fixes #5177

test/compress/awaits.js

@@ -453,7 +453,7 @@ object_function: {
         }).f();
     }
     expect: {
-        (async function() {
+        (async () => {
             console.log("PASS");
         })();
     }
@@ -2212,3 +2212,29 @@ issue_5159_2: {
     ]
     node_version: ">=8"
 }
+
+issue_5177: {
+    options = {
+        properties: true,
+    }
+    input: {
+        (async function() {
+            return {
+                p(await) {},
+            }.p;
+        })().then(function(a) {
+            console.log(typeof a);
+        });
+    }
+    expect: {
+        (async function() {
+            return {
+                p(await) {},
+            }.p;
+        })().then(function(a) {
+            console.log(typeof a);
+        });
+    }
+    expect_stdout: "function"
+    node_version: ">=8"
+}

test/compress/properties.js

@@ -1510,3 +1510,71 @@ issue_5093_quote_style: {
     expect_exact: 'console.log({a:true,\'42\':"PASS","null":[]}[6*7]);'
     expect_stdout: "PASS"
 }
+
+object_methods: {
+    options = {
+        properties: true,
+    }
+    input: {
+        ({
+            p() {
+                console.log("FAIL 1");
+            },
+            *q() {
+                console.log("FAIL 2");
+            },
+            async r() {
+                console.log("FAIL 3");
+            },
+            async *s() {
+                console.log("PASS");
+            },
+        }).s().next();
+    }
+    expect: {
+        [
+            () => {
+                console.log("FAIL 1");
+            },
+            function*() {
+                console.log("FAIL 2");
+            },
+            async () => {
+                console.log("FAIL 3");
+            },
+            async function*() {
+                console.log("PASS");
+            },
+        ][3]().next();
+    }
+    expect_stdout: "PASS"
+    node_version: ">=10"
+}
+
+issue_5177: {
+    options = {
+        properties: true,
+    }
+    input: {
+        var a = "FAIL";
+        var o = { a: "PASS" };
+        o.p = {
+            q() {
+                return this.a;
+            },
+        }.q;
+        console.log(o.p());
+    }
+    expect: {
+        var a = "FAIL";
+        var o = { a: "PASS" };
+        o.p = {
+            q() {
+                return this.a;
+            },
+        }.q;
+        console.log(o.p());
+    }
+    expect_stdout: "PASS"
+    node_version: ">=4"
+}

test/compress/yields.js

@@ -96,7 +96,7 @@ pause_resume: {
     node_version: ">=4"
 }
 
-arrow_yield: {
+arrow_yield_1: {
     input: {
         yield = "PASS";
         console.log(function*() {
@@ -108,6 +108,18 @@ arrow_yield: {
     node_version: ">=4"
 }
 
+arrow_yield_2: {
+    input: {
+        console.log(typeof function *() {
+            // Syntax error on Node.js v6+
+            return (yield) => {};
+        }().next().value);
+    }
+    expect_exact: "console.log(typeof function*(){return(yield)=>{}}().next().value);"
+    expect_stdout: "function"
+    node_version: "4"
+}
+
 for_of: {
     input: {
         function* f() {
@@ -1275,3 +1287,25 @@ issue_5076: {
     expect_stdout: "PASS"
     node_version: ">=6"
 }
+
+issue_5177: {
+    options = {
+        properties: true,
+    }
+    input: {
+        console.log(typeof function*() {
+            return {
+                p(yield) {},
+            }.p;
+        }().next().value);
+    }
+    expect: {
+        console.log(typeof function*() {
+            return {
+                p(yield) {},
+            }.p;
+        }().next().value);
+    }
+    expect_stdout: "function"
+    node_version: ">=4"
+}