Hugging Face's logo

Datasets:
Devendra174
/
react-code-dataset

Dataset card Files
xet
Community
react-code-dataset
File size: 4,022 Bytes 
1e92f2d
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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
 
/* @ts-check */
/**
 * Style injection mechanism for Next.js devtools with shadow DOM support
 * Handles caching of style elements when the nextjs-portal shadow root is not available
 */

// Global cache for style elements when shadow root is not available
if (typeof window !== 'undefined') {
  window._nextjsDevtoolsStyleCache = window._nextjsDevtoolsStyleCache || {
    pendingElements: [],
    isObserving: false,
    lastInsertedElement: null,
    cachedShadowRoot: null, // Cache the shadow root once found
  }
}

/**
 * @returns {ShadowRoot | null}
 */
function getShadowRoot() {
  const cache = window._nextjsDevtoolsStyleCache

  // Return cached shadow root if available
  if (cache.cachedShadowRoot) {
    return cache.cachedShadowRoot
  }

  // Query the DOM and cache the result if found
  const portal = document.querySelector('nextjs-portal')
  const shadowRoot = portal?.shadowRoot || null

  if (shadowRoot) {
    cache.cachedShadowRoot = shadowRoot
  }

  return shadowRoot
}

/**
 * @param {HTMLElement} element
 * @param {ShadowRoot} shadowRoot
 */
function insertElementIntoShadowRoot(element, shadowRoot) {
  const cache = window._nextjsDevtoolsStyleCache

  if (!cache.lastInsertedElement) {
    shadowRoot.insertBefore(element, shadowRoot.firstChild)
  } else if (cache.lastInsertedElement.nextSibling) {
    shadowRoot.insertBefore(element, cache.lastInsertedElement.nextSibling)
  } else {
    shadowRoot.appendChild(element)
  }

  cache.lastInsertedElement = element
}

function flushCachedElements() {
  const cache = window._nextjsDevtoolsStyleCache
  const shadowRoot = getShadowRoot()

  if (!shadowRoot) {
    return
  }

  cache.pendingElements.forEach((element) => {
    insertElementIntoShadowRoot(element, shadowRoot)
  })
  cache.pendingElements = []
}

function startObservingForPortal() {
  const cache = window._nextjsDevtoolsStyleCache

  if (cache.isObserving) {
    return
  }
  cache.isObserving = true

  // First check if the portal already exists
  const shadowRoot = getShadowRoot() // This will cache it if found
  if (shadowRoot) {
    flushCachedElements()
    return
  }

  // Set up MutationObserver to watch for the portal element
  const observer = new MutationObserver((mutations) => {
    if (mutations.length === 0 || mutations[0].addedNodes.length === 0) {
      return
    }

    // Check if mutation is script[data-nextjs-dev-overlay] tag, which is the
    // parent of the nextjs-portal element
    const mutationNode = mutations[0].addedNodes[0]
    let portalNode = null
    if (
      // app router: body > script[data-nextjs-dev-overlay] > nextjs-portal
      mutationNode.tagName === 'SCRIPT' &&
      mutationNode.getAttribute('data-nextjs-dev-overlay')
    ) {
      portalNode = mutationNode.firstChild
    } else if (
      // pages router: body > nextjs-portal
      mutationNode.tagName === 'NEXTJS-PORTAL'
    ) {
      portalNode = mutationNode
    }
    if (!portalNode) {
      return
    }

    // Wait until shadow root is available
    const checkShadowRoot = () => {
      if (getShadowRoot()) {
        flushCachedElements()
        observer.disconnect()
        cache.isObserving = false
      } else {
        // Try again after a short delay
        setTimeout(checkShadowRoot, 20)
      }
    }
    checkShadowRoot()
  })

  observer.observe(document.body, {
    childList: true,
    subtree: true,
  })
}

/**
 * @param {HTMLElement} element
 */
function insertAtTop(element) {
  // Add special recognizable data prop to element
  element.setAttribute('data-nextjs-dev-tool-style', 'true')

  const shadowRoot = getShadowRoot()
  if (shadowRoot) {
    // Shadow root is available, insert directly
    insertElementIntoShadowRoot(element, shadowRoot)
  } else {
    // Shadow root not available, cache the element
    const cache = window._nextjsDevtoolsStyleCache
    cache.pendingElements.push(element)

    // Start observing for the portal if not already observing
    startObservingForPortal()
  }
}

module.exports = insertAtTop