File size: 4,733 Bytes
56fda74
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
import nodePath from 'path'

/*
type LabelFormatOptions = {
  name: string,
  path: string
}
*/

const invalidClassNameCharacters = /[!"#$%&'()*+,./:;<=>?@[\]^`|}~{]/g

const sanitizeLabelPart = (labelPart /*: string */) =>
  labelPart.trim().replace(invalidClassNameCharacters, '-')

function getLabel(
  identifierName /* ?: string */,
  labelFormat /* ?: string | (LabelFormatOptions => string) */,
  filename /*: string */
) {
  if (!identifierName) return null

  const sanitizedName = sanitizeLabelPart(identifierName)

  if (!labelFormat) {
    return sanitizedName
  }

  if (typeof labelFormat === 'function') {
    return labelFormat({
      name: sanitizedName,
      path: filename
    })
  }

  const parsedPath = nodePath.parse(filename)
  let localDirname = nodePath.basename(parsedPath.dir)
  let localFilename = parsedPath.name

  if (localFilename === 'index') {
    localFilename = localDirname
  }

  return labelFormat
    .replace(/\[local\]/gi, sanitizedName)
    .replace(/\[filename\]/gi, sanitizeLabelPart(localFilename))
    .replace(/\[dirname\]/gi, sanitizeLabelPart(localDirname))
}

export function getLabelFromPath(path, state, t) {
  return getLabel(
    getIdentifierName(path, t),
    state.opts.labelFormat,
    state.file.opts.filename
  )
}

const getObjPropertyLikeName = (path, t) => {
  if (
    (!t.isObjectProperty(path) && !t.isObjectMethod(path)) ||
    path.node.computed
  ) {
    return null
  }
  if (t.isIdentifier(path.node.key)) {
    return path.node.key.name
  }

  if (t.isStringLiteral(path.node.key)) {
    return path.node.key.value.replace(/\s+/g, '-')
  }

  return null
}

function getDeclaratorName(path, t) {
  const parent = path.findParent(
    p =>
      p.isVariableDeclarator() ||
      p.isAssignmentExpression() ||
      p.isFunctionDeclaration() ||
      p.isFunctionExpression() ||
      p.isArrowFunctionExpression() ||
      p.isObjectProperty() ||
      p.isObjectMethod()
  )
  if (!parent) {
    return ''
  }

  // we probably have a css call assigned to a variable
  // so we'll just return the variable name
  if (parent.isVariableDeclarator()) {
    if (t.isIdentifier(parent.node.id)) {
      return parent.node.id.name
    }
    return ''
  }

  if (parent.isAssignmentExpression()) {
    let { left } = parent.node
    if (t.isIdentifier(left)) {
      return left.name
    }
    if (t.isMemberExpression(left)) {
      let memberExpression = left
      let name = ''
      while (true) {
        if (!t.isIdentifier(memberExpression.property)) {
          return ''
        }

        name = `${memberExpression.property.name}${name ? `-${name}` : ''}`

        if (t.isIdentifier(memberExpression.object)) {
          return `${memberExpression.object.name}-${name}`
        }

        if (!t.isMemberExpression(memberExpression.object)) {
          return ''
        }
        memberExpression = memberExpression.object
      }
    }
    return ''
  }

  // we probably have an inline css prop usage
  if (parent.isFunctionDeclaration()) {
    return parent.node.id.name || ''
  }

  if (parent.isFunctionExpression()) {
    if (parent.node.id) {
      return parent.node.id.name || ''
    }
    return getDeclaratorName(parent, t)
  }

  if (parent.isArrowFunctionExpression()) {
    return getDeclaratorName(parent, t)
  }

  // we could also have an object property
  const objPropertyLikeName = getObjPropertyLikeName(parent, t)

  if (objPropertyLikeName) {
    return objPropertyLikeName
  }

  let variableDeclarator = parent.findParent(p => p.isVariableDeclarator())
  if (!variableDeclarator || !variableDeclarator.get('id').isIdentifier()) {
    return ''
  }
  return variableDeclarator.node.id.name
}

function getIdentifierName(path, t) {
  let objPropertyLikeName = getObjPropertyLikeName(path.parentPath, t)

  if (objPropertyLikeName) {
    return objPropertyLikeName
  }

  let classOrClassPropertyParent = path.findParent(
    p => t.isClassProperty(p) || t.isClass(p)
  )

  if (classOrClassPropertyParent) {
    if (
      t.isClassProperty(classOrClassPropertyParent) &&
      classOrClassPropertyParent.node.computed === false &&
      t.isIdentifier(classOrClassPropertyParent.node.key)
    ) {
      return classOrClassPropertyParent.node.key.name
    }
    if (
      t.isClass(classOrClassPropertyParent) &&
      classOrClassPropertyParent.node.id
    ) {
      return t.isIdentifier(classOrClassPropertyParent.node.id)
        ? classOrClassPropertyParent.node.id.name
        : ''
    }
  }

  let declaratorName = getDeclaratorName(path, t)
  // if the name starts with _ it was probably generated by babel so we should ignore it
  if (declaratorName.charAt(0) === '_') {
    return ''
  }
  return declaratorName
}