fix(es/compat): Don't add pure annotations to dummy spans (#8172)

**Related issue:**

 - Closes #8155.
 - Closes #8173.

crates/jsdoc/tests/fixture.rs

@@ -141,6 +141,8 @@ impl Comments for SwcComments {
     }
 
     fn add_pure_comment(&self, pos: BytePos) {
+        assert_ne!(pos, BytePos(0), "cannot add pure comment to zero position");
+
         let mut leading = self.leading.entry(pos).or_default();
         let pure_comment = Comment {
             kind: CommentKind::Block,

crates/swc/tests/exec/issues-8xxx/8155/.swcrc

@@ -0,0 +1,24 @@
+{
+    "jsc": {
+        "parser": {
+            "syntax": "typescript",
+            "decorators": true,
+            "tsx": false
+        },
+        "transform": {
+            "legacyDecorator": true
+        },
+        "target": "es5",
+        // "loose": false,
+        "minify": {
+            "compress": false,
+            "mangle": false
+        },
+        "loose": false
+    },
+    "module": {
+        "type": "es6"
+    },
+    "minify": false,
+    "isModule": true
+}

crates/swc/tests/exec/issues-8xxx/8155/exec.js

@@ -0,0 +1,16 @@
+const someFn = (xx, x, y) => [x, y];
+
+const getArray = () => [1, 2, 3];
+
+const goodFunction = async () => {
+    const rb = await getArray();
+    const rc = await getArray();
+    console.log(someFn(1, rb, rc));
+}
+
+const badFunction = async () => {
+    console.log(someFn(1, await getArray(), await getArray()))
+}
+
+goodFunction();
+badFunction();

crates/swc/tests/fixture/issues-8xxx/8155/1/input/.swcrc

@@ -0,0 +1,19 @@
+{
+    "jsc": {
+        "parser": {
+            "syntax": "typescript",
+            "decorators": true,
+            "tsx": false
+        },
+        "transform": {
+            "legacyDecorator": true
+        },
+        "target": "es2016",
+        "minify": {
+            "compress": true
+        },
+        "loose": false,
+        "externalHelpers": false
+    },
+    "isModule": true
+}

crates/swc/tests/fixture/issues-8xxx/8155/1/input/1.js

@@ -0,0 +1,16 @@
+const someFn = (xx, x, y) => [x, y];
+
+const getArray = () => [1, 2, 3];
+
+const goodFunction = async () => {
+    const rb = await getArray();
+    const rc = await getArray();
+    console.log(someFn(1, rb, rc));
+}
+
+const badFunction = async () => {
+    console.log(someFn(1, await getArray(), await getArray()))
+}
+
+goodFunction();
+badFunction();

crates/swc/tests/fixture/issues-8xxx/8155/1/output/1.js

@@ -0,0 +1,20 @@
+var _ref, _ref1;
+import { _ as _async_to_generator } from "@swc/helpers/_/_async_to_generator";
+let someFn = (xx, x, y)=>[
+        x,
+        y
+    ], getArray = ()=>[
+        1,
+        2,
+        3
+    ], goodFunction = (_ref = _async_to_generator(function*() {
+    let rb = yield getArray(), rc = yield getArray();
+    console.log(someFn(1, rb, rc));
+}), function() {
+    return _ref.apply(this, arguments);
+}), badFunction = (_ref1 = _async_to_generator(function*() {
+    console.log(someFn(1, (yield getArray()), (yield getArray())));
+}), function() {
+    return _ref1.apply(this, arguments);
+});
+goodFunction(), badFunction();

crates/swc/tests/fixture/issues-8xxx/8155/2/input/.swcrc

@@ -0,0 +1,16 @@
+{
+    "jsc": {
+        "parser": {
+            "syntax": "typescript",
+            "decorators": true,
+            "tsx": false
+        },
+        "transform": {
+            "legacyDecorator": true
+        },
+        "target": "es2016",
+        "loose": false,
+        "externalHelpers": false
+    },
+    "isModule": true
+}

crates/swc/tests/fixture/issues-8xxx/8155/2/input/1.js

@@ -0,0 +1,16 @@
+const someFn = (xx, x, y) => [x, y];
+
+const getArray = () => [1, 2, 3];
+
+const goodFunction = async () => {
+    const rb = await getArray();
+    const rc = await getArray();
+    console.log(someFn(1, rb, rc));
+}
+
+const badFunction = async () => {
+    console.log(someFn(1, await getArray(), await getArray()))
+}
+
+goodFunction();
+badFunction();

crates/swc/tests/fixture/issues-8xxx/8155/2/output/1.js

@@ -0,0 +1,30 @@
+import { _ as _async_to_generator } from "@swc/helpers/_/_async_to_generator";
+const someFn = (xx, x, y)=>[
+        x,
+        y
+    ];
+const getArray = ()=>[
+        1,
+        2,
+        3
+    ];
+const goodFunction = function() {
+    var _ref = _async_to_generator(function*() {
+        const rb = yield getArray();
+        const rc = yield getArray();
+        console.log(someFn(1, rb, rc));
+    });
+    return function goodFunction() {
+        return _ref.apply(this, arguments);
+    };
+}();
+const badFunction = function() {
+    var _ref = _async_to_generator(function*() {
+        console.log(someFn(1, (yield getArray()), (yield getArray())));
+    });
+    return function badFunction() {
+        return _ref.apply(this, arguments);
+    };
+}();
+goodFunction();
+badFunction();

crates/swc/tests/tsc-references/asyncArrowFunction10_es5.2.minified.js

@@ -1,3 +1,10 @@
 //// [asyncArrowFunction10_es5.ts]
 import { _ as _async_to_generator } from "@swc/helpers/_/_async_to_generator";
 import { _ as _ts_generator } from "@swc/helpers/_/_ts_generator";
+_async_to_generator(function() {
+    return _ts_generator(this, function(_state) {
+        return [
+            2
+        ];
+    });
+});

crates/swc/tests/tsc-references/asyncArrowFunction10_es6.2.minified.js

@@ -1,2 +1,3 @@
 //// [asyncArrowFunction10_es6.ts]
 import { _ as _async_to_generator } from "@swc/helpers/_/_async_to_generator";
+_async_to_generator(function*() {});

crates/swc/tests/tsc-references/asyncArrowFunction1_es5.2.minified.js

@@ -1,3 +1,10 @@
 //// [asyncArrowFunction1_es5.ts]
 import { _ as _async_to_generator } from "@swc/helpers/_/_async_to_generator";
 import { _ as _ts_generator } from "@swc/helpers/_/_ts_generator";
+_async_to_generator(function() {
+    return _ts_generator(this, function(_state) {
+        return [
+            2
+        ];
+    });
+});

crates/swc/tests/tsc-references/asyncArrowFunction1_es6.2.minified.js

@@ -1,2 +1,3 @@
 //// [asyncArrowFunction1_es6.ts]
 import { _ as _async_to_generator } from "@swc/helpers/_/_async_to_generator";
+_async_to_generator(function*() {});

crates/swc/tests/tsc-references/asyncAwaitIsolatedModules_es5.2.minified.js

@@ -3,4 +3,81 @@ var M;
 import { _ as _async_to_generator } from "@swc/helpers/_/_async_to_generator";
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 import { _ as _ts_generator } from "@swc/helpers/_/_ts_generator";
-M || (M = {});
+_async_to_generator(function() {
+    return _ts_generator(this, function(_state) {
+        return [
+            2
+        ];
+    });
+}), _async_to_generator(function() {
+    return _ts_generator(this, function(_state) {
+        return [
+            2
+        ];
+    });
+}), _async_to_generator(function() {
+    return _ts_generator(this, function(_state) {
+        return [
+            2
+        ];
+    });
+}), _async_to_generator(function() {
+    return _ts_generator(this, function(_state) {
+        return [
+            2
+        ];
+    });
+}), _async_to_generator(function() {
+    return _ts_generator(this, function(_state) {
+        return [
+            2
+        ];
+    });
+}), _async_to_generator(function() {
+    return _ts_generator(this, function(_state) {
+        return [
+            2
+        ];
+    });
+}), _async_to_generator(function() {
+    return _ts_generator(this, function(_state) {
+        return [
+            2,
+            p
+        ];
+    });
+}), _async_to_generator(function() {
+    return _ts_generator(this, function(_state) {
+        return [
+            2,
+            mp
+        ];
+    });
+}), _async_to_generator(function() {
+    return _ts_generator(this, function(_state) {
+        return [
+            2,
+            mp
+        ];
+    });
+}), _async_to_generator(function() {
+    return _ts_generator(this, function(_state) {
+        return [
+            2,
+            p
+        ];
+    });
+}), function(M) {
+    function _f1() {
+        return (_f1 = _async_to_generator(function() {
+            return _ts_generator(this, function(_state) {
+                return [
+                    2
+                ];
+            });
+        })).apply(this, arguments);
+    }
+    M.f1 = function() {
+        return _f1.apply(this, arguments);
+    };
+}(M || (M = {}));

crates/swc/tests/tsc-references/asyncAwaitIsolatedModules_es6.2.minified.js

@@ -1,4 +1,19 @@
 //// [asyncAwaitIsolatedModules_es6.ts]
 var M;
 import { _ as _async_to_generator } from "@swc/helpers/_/_async_to_generator";
-M || (M = {});
+_async_to_generator(function*() {}), _async_to_generator(function*() {}), _async_to_generator(function*() {}), _async_to_generator(function*() {}), _async_to_generator(function*() {}), _async_to_generator(function*() {}), _async_to_generator(function*() {
+    return p;
+}), _async_to_generator(function*() {
+    return mp;
+}), _async_to_generator(function*() {
+    return mp;
+}), _async_to_generator(function*() {
+    return p;
+}), function(M) {
+    function _f1() {
+        return (_f1 = _async_to_generator(function*() {})).apply(this, arguments);
+    }
+    M.f1 = function() {
+        return _f1.apply(this, arguments);
+    };
+}(M || (M = {}));

crates/swc/tests/tsc-references/asyncAwait_es5.2.minified.js

@@ -3,4 +3,81 @@ var M;
 import { _ as _async_to_generator } from "@swc/helpers/_/_async_to_generator";
 import { _ as _class_call_check } from "@swc/helpers/_/_class_call_check";
 import { _ as _ts_generator } from "@swc/helpers/_/_ts_generator";
-M || (M = {});
+_async_to_generator(function() {
+    return _ts_generator(this, function(_state) {
+        return [
+            2
+        ];
+    });
+}), _async_to_generator(function() {
+    return _ts_generator(this, function(_state) {
+        return [
+            2
+        ];
+    });
+}), _async_to_generator(function() {
+    return _ts_generator(this, function(_state) {
+        return [
+            2
+        ];
+    });
+}), _async_to_generator(function() {
+    return _ts_generator(this, function(_state) {
+        return [
+            2
+        ];
+    });
+}), _async_to_generator(function() {
+    return _ts_generator(this, function(_state) {
+        return [
+            2
+        ];
+    });
+}), _async_to_generator(function() {
+    return _ts_generator(this, function(_state) {
+        return [
+            2
+        ];
+    });
+}), _async_to_generator(function() {
+    return _ts_generator(this, function(_state) {
+        return [
+            2,
+            p
+        ];
+    });
+}), _async_to_generator(function() {
+    return _ts_generator(this, function(_state) {
+        return [
+            2,
+            mp
+        ];
+    });
+}), _async_to_generator(function() {
+    return _ts_generator(this, function(_state) {
+        return [
+            2,
+            mp
+        ];
+    });
+}), _async_to_generator(function() {
+    return _ts_generator(this, function(_state) {
+        return [
+            2,
+            p
+        ];
+    });
+}), function(M) {
+    function _f1() {
+        return (_f1 = _async_to_generator(function() {
+            return _ts_generator(this, function(_state) {
+                return [
+                    2
+                ];
+            });
+        })).apply(this, arguments);
+    }
+    M.f1 = function() {
+        return _f1.apply(this, arguments);
+    };
+}(M || (M = {}));