refactor: Remove utils file

src/nodes/text.ts

@@ -1,78 +1,109 @@
 import { decode } from 'he';
-import NodeType from './type';
-import Node from './node';
 import HTMLElement from './html';
-import { trimText } from '../utils';
+import Node from './node';
+import NodeType from './type';
 
 
 /**
  * TextNode to contain a text element in DOM tree.
  * @param {string} value [description]
  */
 export default class TextNode extends Node {
-	public constructor(rawText: string, parentNode: HTMLElement) {
-		super(parentNode);
-		this._rawText = rawText;
-	}
-
-	/**
-	 * Node Type declaration.
-	 * @type {Number}
-	 */
-	public nodeType = NodeType.TEXT_NODE;
-
-	private _rawText: string;
-	private _trimmedRawText?: string;
-	private _trimmedText?: string;
-
-	public get rawText() {
-		return this._rawText;
-	}
-
-	/**
-	 * Set rawText and invalidate trimmed caches
-	 */
-	public set rawText(text: string) {
-		this._rawText = text;
-		this._trimmedRawText = void 0;
-		this._trimmedText = void 0;
-	}
-
-	/**
-	 * Returns raw text with all whitespace trimmed except single leading/trailing non-breaking space
-	 */
-	public get trimmedRawText() {
-		if (this._trimmedRawText !== undefined) return this._trimmedRawText;
-		this._trimmedRawText = trimText(this.rawText);
-		return this._trimmedRawText;
-	}
-
-	/**
-	 * Returns text with all whitespace trimmed except single leading/trailing non-breaking space
-	 */
-	public get trimmedText() {
-		if (this._trimmedText !== undefined) return this._trimmedText;
-		this._trimmedText = trimText(this.text);
-		return this._trimmedText;
-	}
-
-	/**
-	 * Get unescaped text value of current node and its children.
-	 * @return {string} text content
-	 */
-	public get text() {
-		return decode(this.rawText);
-	}
-
-	/**
-	 * Detect if the node contains only white space.
-	 * @return {boolean}
-	 */
-	public get isWhitespace() {
-		return /^(\s| )*$/.test(this.rawText);
-	}
-
-	public toString() {
-		return this.rawText;
-	}
+  public constructor(rawText: string, parentNode: HTMLElement) {
+    super(parentNode);
+    this._rawText = rawText;
+  }
+
+  /**
+   * Node Type declaration.
+   * @type {Number}
+   */
+  public nodeType = NodeType.TEXT_NODE;
+
+  private _rawText: string;
+  private _trimmedRawText?: string;
+  private _trimmedText?: string;
+
+  public get rawText() {
+    return this._rawText;
+  }
+
+  /**
+   * Set rawText and invalidate trimmed caches
+   */
+  public set rawText(text: string) {
+    this._rawText = text;
+    this._trimmedRawText = void 0;
+    this._trimmedText = void 0;
+  }
+
+  /**
+   * Returns raw text with all whitespace trimmed except single leading/trailing non-breaking space
+   */
+  public get trimmedRawText() {
+    if (this._trimmedRawText !== undefined) return this._trimmedRawText;
+    this._trimmedRawText = trimText(this.rawText);
+    return this._trimmedRawText;
+  }
+
+  /**
+   * Returns text with all whitespace trimmed except single leading/trailing non-breaking space
+   */
+  public get trimmedText() {
+    if (this._trimmedText !== undefined) return this._trimmedText;
+    this._trimmedText = trimText(this.text);
+    return this._trimmedText;
+  }
+
+  /**
+   * Get unescaped text value of current node and its children.
+   * @return {string} text content
+   */
+  public get text() {
+    return decode(this.rawText);
+  }
+
+  /**
+   * Detect if the node contains only white space.
+   * @return {boolean}
+   */
+  public get isWhitespace() {
+    return /^(\s| )*$/.test(this.rawText);
+  }
+
+  public toString() {
+    return this.rawText;
+  }
+}
+
+/**
+ * Trim whitespace except single leading/trailing non-breaking space
+ */
+function trimText(text: string): string {
+  let i = 0;
+  let startPos;
+  let endPos;
+
+  while (i >= 0 && i < text.length) {
+    if (/\S/.test(text[i])) {
+      if (startPos === undefined) {
+        startPos = i;
+        i = text.length;
+      } else {
+        endPos = i;
+        i = void 0;
+      }
+    }
+
+    if (startPos === undefined) i++;
+    else i--;
+  }
+
+  if (startPos === undefined) startPos = 0;
+  if (endPos === undefined) endPos = text.length - 1;
+
+  const hasLeadingSpace = startPos > 0 && /[^\S\r\n]/.test(text[startPos - 1]);
+  const hasTrailingSpace = endPos < (text.length - 1) && /[^\S\r\n]/.test(text[endPos + 1]);
+
+  return (hasLeadingSpace ? ' ' : '') + text.slice(startPos, endPos + 1) + (hasTrailingSpace ? ' ' : '');
 }