Revert "allow custom escape character"

This reverts commit e078efd695.

src/mask.ts

@@ -96,19 +96,6 @@ export class Mask {
     )
   }
 
-  private isEscape (ch: string) {
-    if (ch === '!' && !this.opts.tokensReplace) {
-      return true
-    } else {
-      for (let tokensKey in this.opts.tokens) {
-        if (tokensKey === ch && this.opts.tokens[tokensKey].escape) {
-          return true
-        }
-      }
-    }
-    return false;
-  }
-
   private escapeMask (maskRaw: string): {
     mask: string
     escaped: number[]
@@ -116,7 +103,7 @@ export class Mask {
     const chars: string[] = []
     const escaped: number[] = []
     maskRaw.split('').forEach((ch, i) => {
-      if (this.isEscape(ch) && !this.isEscape(maskRaw[i - 1])) {
+      if (ch === '!' && maskRaw[i - 1] !== '!') {
         escaped.push(i - escaped.length)
       } else {
         chars.push(ch)

src/parser.ts

@@ -46,8 +46,7 @@ const parseTokens = (value: string): MaskTokens => {
       pattern: new RegExp(parts[1]),
       optional: parts[2] === 'optional',
       multiple: parts[2] === 'multiple',
-      repeated: parts[2] === 'repeated',
-      escape: parts[2] === 'escape'
+      repeated: parts[2] === 'repeated'
     }
   })
 

src/tokens.ts

@@ -3,7 +3,6 @@ interface MaskToken {
   multiple?: boolean
   optional?: boolean
   repeated?: boolean
-  escape?: boolean
   transform?: (char: string) => string
 }