-
-
Notifications
You must be signed in to change notification settings - Fork 291
/
resolveObjectValuesToArray.js
152 lines (134 loc) · 4.33 KB
/
resolveObjectValuesToArray.js
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
/**
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
* @flow
*/
import { ASTNode, NodePath, builders, namedTypes as t } from 'ast-types';
import resolveToValue from './resolveToValue';
type ObjectPropMap = {
properties: Array<string>,
values: Object,
};
function isObjectValuesCall(node: ASTNode): boolean {
return (
t.CallExpression.check(node) &&
node.arguments.length === 1 &&
t.MemberExpression.check(node.callee) &&
t.Identifier.check(node.callee.object) &&
node.callee.object.name === 'Object' &&
t.Identifier.check(node.callee.property) &&
node.callee.property.name === 'values'
);
}
function isWhitelistedObjectProperty(prop) {
return (
(t.Property.check(prop) &&
((t.Identifier.check(prop.key) && !prop.computed) ||
t.Literal.check(prop.key))) ||
t.SpreadElement.check(prop)
);
}
function isWhiteListedObjectTypeProperty(prop) {
return (
t.ObjectTypeProperty.check(prop) ||
t.ObjectTypeSpreadProperty.check(prop) ||
t.TSPropertySignature.check(prop)
);
}
// Resolves an ObjectExpression or an ObjectTypeAnnotation
export function resolveObjectToPropMap(
object: NodePath,
raw: boolean = false,
): ?ObjectPropMap {
if (
(t.ObjectExpression.check(object.value) &&
object.value.properties.every(isWhitelistedObjectProperty)) ||
(t.ObjectTypeAnnotation.check(object.value) &&
object.value.properties.every(isWhiteListedObjectTypeProperty)) ||
(t.TSTypeLiteral.check(object.value) &&
object.value.members.every(isWhiteListedObjectTypeProperty))
) {
const properties = [];
let values = {};
let error = false;
const members = t.TSTypeLiteral.check(object.value)
? object.get('members')
: object.get('properties');
members.each(propPath => {
if (error) return;
const prop = propPath.value;
if (prop.kind === 'get' || prop.kind === 'set') return;
if (
t.Property.check(prop) ||
t.ObjectTypeProperty.check(prop) ||
t.TSPropertySignature.check(prop)
) {
// Key is either Identifier or Literal
const name = prop.key.name || (raw ? prop.key.raw : prop.key.value);
const propValue = propPath.get(name).parentPath.value;
const value =
propValue.value.value ||
(raw ? propValue.value.raw : propValue.value.value);
if (properties.indexOf(name) === -1) {
properties.push(name);
}
values[name] = value;
} else if (
t.SpreadElement.check(prop) ||
t.ObjectTypeSpreadProperty.check(prop)
) {
let spreadObject = resolveToValue(propPath.get('argument'));
if (t.GenericTypeAnnotation.check(spreadObject.value)) {
const typeAlias = resolveToValue(spreadObject.get('id'));
if (t.ObjectTypeAnnotation.check(typeAlias.get('right').value)) {
spreadObject = resolveToValue(typeAlias.get('right'));
}
}
const spreadValues = resolveObjectToPropMap(spreadObject);
if (!spreadValues) {
error = true;
return;
}
spreadValues.properties.forEach(spreadProp => {
if (properties.indexOf(spreadProp) === -1) {
properties.push(spreadProp);
}
});
values = { ...values, ...spreadValues.values };
}
});
if (!error) {
return { properties: properties.sort(), values };
}
}
return null;
}
/**
* Returns an ArrayExpression which contains all the values resolved from an object
*
* Ignores setters in objects
*
* Returns null in case of
* unresolvable spreads
* computed identifier values
*/
export default function resolveObjectValuesToArray(path: NodePath): ?NodePath {
const node = path.node;
if (isObjectValuesCall(node)) {
const objectExpression = resolveToValue(path.get('arguments').get(0));
const propMap = resolveObjectToPropMap(objectExpression);
if (propMap) {
const nodes = propMap.properties.map(prop => {
const value = propMap.values[prop];
return typeof value === 'undefined'
? builders.literal(null)
: builders.literal(value);
});
return new NodePath(builders.arrayExpression(nodes));
}
}
return null;
}