planning

node_modules/vfile-message/index.js

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+'use strict'
+
+var stringify = require('unist-util-stringify-position')
+
+module.exports = VMessage
+
+// Inherit from `Error#`.
+function VMessagePrototype() {}
+VMessagePrototype.prototype = Error.prototype
+VMessage.prototype = new VMessagePrototype()
+
+// Message properties.
+var proto = VMessage.prototype
+
+proto.file = ''
+proto.name = ''
+proto.reason = ''
+proto.message = ''
+proto.stack = ''
+proto.fatal = null
+proto.column = null
+proto.line = null
+
+// Construct a new VMessage.
+//
+// Note: We cannot invoke `Error` on the created context, as that adds readonly
+// `line` and `column` attributes on Safari 9, thus throwing and failing the
+// data.
+function VMessage(reason, position, origin) {
+  var parts
+  var range
+  var location
+
+  if (typeof position === 'string') {
+    origin = position
+    position = null
+  }
+
+  parts = parseOrigin(origin)
+  range = stringify(position) || '1:1'
+
+  location = {
+    start: {line: null, column: null},
+    end: {line: null, column: null}
+  }
+
+  // Node.
+  if (position && position.position) {
+    position = position.position
+  }
+
+  if (position) {
+    // Position.
+    if (position.start) {
+      location = position
+      position = position.start
+    } else {
+      // Point.
+      location.start = position
+    }
+  }
+
+  if (reason.stack) {
+    this.stack = reason.stack
+    reason = reason.message
+  }
+
+  this.message = reason
+  this.name = range
+  this.reason = reason
+  this.line = position ? position.line : null
+  this.column = position ? position.column : null
+  this.location = location
+  this.source = parts[0]
+  this.ruleId = parts[1]
+}
+
+function parseOrigin(origin) {
+  var result = [null, null]
+  var index
+
+  if (typeof origin === 'string') {
+    index = origin.indexOf(':')
+
+    if (index === -1) {
+      result[1] = origin
+    } else {
+      result[0] = origin.slice(0, index)
+      result[1] = origin.slice(index + 1)
+    }
+  }
+
+  return result
+}