forked from storybookjs/storybook
/
NgComponentAnalyzer.ts
138 lines (117 loc) 路 3.9 KB
/
NgComponentAnalyzer.ts
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
import {
Component,
Directive,
Input,
Output,
Pipe,
Type,
傻ReflectionCapabilities as ReflectionCapabilities,
傻CodegenComponentFactoryResolver,
} from '@angular/core';
const reflectionCapabilities = new ReflectionCapabilities();
export type ComponentInputsOutputs = {
inputs: {
propName: string;
templateName: string;
}[];
outputs: {
propName: string;
templateName: string;
}[];
};
/**
* Returns component Inputs / Outputs by browsing these properties and decorator
*/
export const getComponentInputsOutputs = (component: any): ComponentInputsOutputs => {
const componentMetadata = getComponentDecoratorMetadata(component);
const componentPropsMetadata = getComponentPropsDecoratorMetadata(component);
const initialValue: ComponentInputsOutputs = {
inputs: [],
outputs: [],
};
// Adds the I/O present in @Component metadata
if (componentMetadata && componentMetadata.inputs) {
initialValue.inputs.push(
...componentMetadata.inputs.map((i) => ({ propName: i, templateName: i }))
);
}
if (componentMetadata && componentMetadata.outputs) {
initialValue.outputs.push(
...componentMetadata.outputs.map((i) => ({ propName: i, templateName: i }))
);
}
if (!componentPropsMetadata) {
return initialValue;
}
// Browses component properties to extract I/O
// Filters properties that have the same name as the one present in the @Component property
return Object.entries(componentPropsMetadata).reduce((previousValue, [propertyName, values]) => {
const value = values.find((v) => v instanceof Input || v instanceof Output);
if (value instanceof Input) {
const inputToAdd = {
propName: propertyName,
templateName: value.bindingPropertyName ?? propertyName,
};
const previousInputsFiltered = previousValue.inputs.filter(
(i) => i.templateName !== propertyName
);
return {
...previousValue,
inputs: [...previousInputsFiltered, inputToAdd],
};
}
if (value instanceof Output) {
const outputToAdd = {
propName: propertyName,
templateName: value.bindingPropertyName ?? propertyName,
};
const previousOutputsFiltered = previousValue.outputs.filter(
(i) => i.templateName !== propertyName
);
return {
...previousValue,
outputs: [...previousOutputsFiltered, outputToAdd],
};
}
return previousValue;
}, initialValue);
};
export const isDeclarable = (component: any): boolean => {
if (!component) {
return false;
}
const decorators = reflectionCapabilities.annotations(component);
return !!(decorators || []).find(
(d) => d instanceof Directive || d instanceof Pipe || d instanceof Component
);
};
export const isComponent = (component: any): component is Type<unknown> => {
if (!component) {
return false;
}
const decorators = reflectionCapabilities.annotations(component);
return (decorators || []).some((d) => d instanceof Component);
};
export const isStandaloneComponent = (component: any): component is Type<unknown> => {
if (!component) {
return false;
}
const decorators = reflectionCapabilities.annotations(component);
// TODO: `standalone` is only available in Angular v14. Remove cast to `any` once
// Angular deps are updated to v14.x.x.
return (decorators || []).some((d) => d instanceof Component && (d as any).standalone);
};
/**
* Returns all component decorator properties
* is used to get all `@Input` and `@Output` Decorator
*/
export const getComponentPropsDecoratorMetadata = (component: any) => {
return reflectionCapabilities.propMetadata(component);
};
/**
* Returns component decorator `@Component`
*/
export const getComponentDecoratorMetadata = (component: any): Component | undefined => {
const decorators = reflectionCapabilities.annotations(component);
return decorators.reverse().find((d) => d instanceof Component);
};