1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
|
"use strict";
exports.__esModule = true;
exports.default = function (path, file, helpers) {
if (!helpers) {
helpers = { wrapAsync: file };
file = null;
}
path.traverse(awaitVisitor, {
file: file,
wrapAwait: helpers.wrapAwait
});
if (path.isClassMethod() || path.isObjectMethod()) {
classOrObjectMethod(path, helpers.wrapAsync);
} else {
plainFunction(path, helpers.wrapAsync);
}
};
var _babelHelperFunctionName = require("babel-helper-function-name");
var _babelHelperFunctionName2 = _interopRequireDefault(_babelHelperFunctionName);
var _babelTemplate = require("babel-template");
var _babelTemplate2 = _interopRequireDefault(_babelTemplate);
var _babelTypes = require("babel-types");
var t = _interopRequireWildcard(_babelTypes);
var _forAwait = require("./for-await");
var _forAwait2 = _interopRequireDefault(_forAwait);
function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
var buildWrapper = (0, _babelTemplate2.default)("\n (() => {\n var REF = FUNCTION;\n return function NAME(PARAMS) {\n return REF.apply(this, arguments);\n };\n })\n");
var namedBuildWrapper = (0, _babelTemplate2.default)("\n (() => {\n var REF = FUNCTION;\n function NAME(PARAMS) {\n return REF.apply(this, arguments);\n }\n return NAME;\n })\n");
var awaitVisitor = {
Function: function Function(path) {
if (path.isArrowFunctionExpression() && !path.node.async) {
path.arrowFunctionToShadowed();
return;
}
path.skip();
},
AwaitExpression: function AwaitExpression(_ref, _ref2) {
var node = _ref.node;
var wrapAwait = _ref2.wrapAwait;
node.type = "YieldExpression";
if (wrapAwait) {
node.argument = t.callExpression(wrapAwait, [node.argument]);
}
},
ForAwaitStatement: function ForAwaitStatement(path, _ref3) {
var file = _ref3.file,
wrapAwait = _ref3.wrapAwait;
var node = path.node;
var build = (0, _forAwait2.default)(path, {
getAsyncIterator: file.addHelper("asyncIterator"),
wrapAwait: wrapAwait
});
var declar = build.declar,
loop = build.loop;
var block = loop.body;
path.ensureBlock();
if (declar) {
block.body.push(declar);
}
block.body = block.body.concat(node.body.body);
t.inherits(loop, node);
t.inherits(loop.body, node.body);
if (build.replaceParent) {
path.parentPath.replaceWithMultiple(build.node);
path.remove();
} else {
path.replaceWithMultiple(build.node);
}
}
};
function classOrObjectMethod(path, callId) {
var node = path.node;
var body = node.body;
node.async = false;
var container = t.functionExpression(null, [], t.blockStatement(body.body), true);
container.shadow = true;
body.body = [t.returnStatement(t.callExpression(t.callExpression(callId, [container]), []))];
node.generator = false;
}
function plainFunction(path, callId) {
var node = path.node;
var isDeclaration = path.isFunctionDeclaration();
var asyncFnId = node.id;
var wrapper = buildWrapper;
if (path.isArrowFunctionExpression()) {
path.arrowFunctionToShadowed();
} else if (!isDeclaration && asyncFnId) {
wrapper = namedBuildWrapper;
}
node.async = false;
node.generator = true;
node.id = null;
if (isDeclaration) {
node.type = "FunctionExpression";
}
var built = t.callExpression(callId, [node]);
var container = wrapper({
NAME: asyncFnId,
REF: path.scope.generateUidIdentifier("ref"),
FUNCTION: built,
PARAMS: node.params.reduce(function (acc, param) {
acc.done = acc.done || t.isAssignmentPattern(param) || t.isRestElement(param);
if (!acc.done) {
acc.params.push(path.scope.generateUidIdentifier("x"));
}
return acc;
}, {
params: [],
done: false
}).params
}).expression;
if (isDeclaration) {
var declar = t.variableDeclaration("let", [t.variableDeclarator(t.identifier(asyncFnId.name), t.callExpression(container, []))]);
declar._blockHoist = true;
path.replaceWith(declar);
} else {
var retFunction = container.body.body[1].argument;
if (!asyncFnId) {
(0, _babelHelperFunctionName2.default)({
node: retFunction,
parent: path.parent,
scope: path.scope
});
}
if (!retFunction || retFunction.id || node.params.length) {
path.replaceWith(t.callExpression(container, []));
} else {
path.replaceWith(built);
}
}
}
module.exports = exports["default"];
|
