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app_vue/node_modules/eslint-plugin-vue/lib/processor.js

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+/**
+ * @author Toru Nagashima <https://github.com/mysticatea>
+ */
+'use strict'
+
+/**
+ * @typedef {import('eslint').Linter.LintMessage} LintMessage
+ */
+/**
+ * @typedef {object} GroupState
+ * @property {Set<string>} GroupState.disableAllKeys
+ * @property {Map<string, string[]>} GroupState.disableRuleKeys
+ */
+
+module.exports = {
+  /** @param {string} code */
+  preprocess(code) {
+    return [code]
+  },
+
+  /**
+   * @param {LintMessage[][]} messages
+   * @returns {LintMessage[]}
+   */
+  postprocess(messages) {
+    const state = {
+      /** @type {GroupState} */
+      block: {
+        disableAllKeys: new Set(),
+        disableRuleKeys: new Map()
+      },
+      /** @type {GroupState} */
+      line: {
+        disableAllKeys: new Set(),
+        disableRuleKeys: new Map()
+      }
+    }
+    /** @type {string[]} */
+    const usedDisableDirectiveKeys = []
+    /** @type {Map<string,LintMessage>} */
+    const unusedDisableDirectiveReports = new Map()
+
+    // Filter messages which are in disabled area.
+    const filteredMessages = messages[0].filter((message) => {
+      if (message.ruleId === 'vue/comment-directive') {
+        const directiveType = message.messageId
+        const data = message.message.split(' ')
+        switch (directiveType) {
+          case 'disableBlock':
+            state.block.disableAllKeys.add(data[1])
+            break
+          case 'disableLine':
+            state.line.disableAllKeys.add(data[1])
+            break
+          case 'enableBlock':
+            state.block.disableAllKeys.clear()
+            break
+          case 'enableLine':
+            state.line.disableAllKeys.clear()
+            break
+          case 'disableBlockRule':
+            addDisableRule(state.block.disableRuleKeys, data[1], data[2])
+            break
+          case 'disableLineRule':
+            addDisableRule(state.line.disableRuleKeys, data[1], data[2])
+            break
+          case 'enableBlockRule':
+            state.block.disableRuleKeys.delete(data[1])
+            break
+          case 'enableLineRule':
+            state.line.disableRuleKeys.delete(data[1])
+            break
+          case 'clear':
+            state.block.disableAllKeys.clear()
+            state.block.disableRuleKeys.clear()
+            state.line.disableAllKeys.clear()
+            state.line.disableRuleKeys.clear()
+            break
+          default:
+            // unused eslint-disable comments report
+            unusedDisableDirectiveReports.set(messageToKey(message), message)
+            break
+        }
+        return false
+      } else {
+        const disableDirectiveKeys = []
+        if (state.block.disableAllKeys.size) {
+          disableDirectiveKeys.push(...state.block.disableAllKeys)
+        }
+        if (state.line.disableAllKeys.size) {
+          disableDirectiveKeys.push(...state.line.disableAllKeys)
+        }
+        if (message.ruleId) {
+          const block = state.block.disableRuleKeys.get(message.ruleId)
+          if (block) {
+            disableDirectiveKeys.push(...block)
+          }
+          const line = state.line.disableRuleKeys.get(message.ruleId)
+          if (line) {
+            disableDirectiveKeys.push(...line)
+          }
+        }
+
+        if (disableDirectiveKeys.length) {
+          // Store used eslint-disable comment key
+          usedDisableDirectiveKeys.push(...disableDirectiveKeys)
+          return false
+        } else {
+          return true
+        }
+      }
+    })
+
+    if (unusedDisableDirectiveReports.size) {
+      for (const key of usedDisableDirectiveKeys) {
+        // Remove used eslint-disable comments
+        unusedDisableDirectiveReports.delete(key)
+      }
+      // Reports unused eslint-disable comments
+      filteredMessages.push(...unusedDisableDirectiveReports.values())
+      filteredMessages.sort(compareLocations)
+    }
+
+    return filteredMessages
+  },
+
+  supportsAutofix: true
+}
+
+/**
+ * @param {Map<string, string[]>} disableRuleKeys
+ * @param {string} rule
+ * @param {string} key
+ */
+function addDisableRule(disableRuleKeys, rule, key) {
+  let keys = disableRuleKeys.get(rule)
+  if (keys) {
+    keys.push(key)
+  } else {
+    keys = [key]
+    disableRuleKeys.set(rule, keys)
+  }
+}
+
+/**
+ * @param {LintMessage} message
+ * @returns {string} message key
+ */
+function messageToKey(message) {
+  return `line:${message.line},column${
+    // -1 because +1 by ESLint's `report-translator`.
+    message.column - 1
+  }`
+}
+
+/**
+ * Compares the locations of two objects in a source file
+ * @param {Position} itemA The first object
+ * @param {Position} itemB The second object
+ * @returns {number} A value less than 1 if itemA appears before itemB in the source file, greater than 1 if
+ * itemA appears after itemB in the source file, or 0 if itemA and itemB have the same location.
+ */
+function compareLocations(itemA, itemB) {
+  return itemA.line - itemB.line || itemA.column - itemB.column
+}