feat(language-server): add Sails completion provider

packages/language-server/completions/sails-completions.js

@@ -0,0 +1,63 @@
+const lsp = require('vscode-languageserver/node')
+const loadSails = require('../helpers/load-sails')
+
+module.exports = async function sailsCompletions(document, position) {
+  const text = document.getText()
+  const offset = document.offsetAt(position)
+  const line = text.substring(0, offset).split('\n').pop()
+
+  const match = line.match(/sails((?:\.[a-zA-Z_$][0-9a-zA-Z_$]*)*)\.$/)
+  if (match) {
+    try {
+      return await loadSails(document.uri, (sailsApp) => {
+        const path = match[1].split('.').filter(Boolean)
+        return getNestedCompletions(sailsApp, path)
+      })
+    } catch (error) {
+      return []
+    }
+  }
+
+  return null
+}
+
+function getNestedCompletions(obj, path) {
+  let current = obj
+  for (const key of path) {
+    if (current && typeof current === 'object' && key in current) {
+      current = current[key]
+    } else {
+      return []
+    }
+  }
+
+  if (typeof current !== 'object' || current === null) {
+    return []
+  }
+
+  const completions = Object.keys(current).map((key) => {
+    const value = current[key]
+    let kind = lsp.CompletionItemKind.Property
+    let detail = 'Property'
+
+    if (typeof value === 'function') {
+      kind = lsp.CompletionItemKind.Method
+      detail = 'Method'
+    } else if (typeof value === 'object' && value !== null) {
+      detail = 'Object'
+    }
+
+    return {
+      label: key,
+      kind: kind,
+      detail: detail,
+      documentation: `Access to sails${path.length ? '.' + path.join('.') : ''}.${key}`,
+      sortText: key.startsWith('_') ? `z${key}` : key // Add this line
+    }
+  })
+
+  // Sort the completions
+  completions.sort((a, b) => a.sortText.localeCompare(b.sortText))
+
+  return completions
+}