Fix error related to perplex when used from ESM

This fixes an error related to invalid constructor for perplex when the
module was used within an ESM project

Author: mvantellingen

.changeset/popular-bikes-search.md

@@ -0,0 +1,5 @@
+---
+'@labdigital/commercetools-mock': patch
+---
+
+Fix error related to perplex when used from ESM

src/lib/predicateParser.ts

@@ -4,7 +4,7 @@
  *
  * See https://docs.commercetools.com/api/predicates/query
  */
-import perplex from 'perplex'
+import Lexer from 'perplex'
 import { ITokenPosition, Parser } from 'pratt'
 import { haversineDistance } from './haversine'
 
@@ -104,7 +104,7 @@ const resolveValue = (obj: any, val: TypeSymbol): any => {
 }
 
 const getLexer = (value: string) =>
-  new perplex(value)
+  new Lexer<string>(value)
 
     .token('AND', /and(?![-_a-z0-9]+)/i)
     .token('OR', /or(?![-_a-z0-9]+)/i)

src/lib/projectionSearchFilter.ts

@@ -3,10 +3,10 @@
  */
 
 import type { ProductProjection, ProductVariant } from '@commercetools/platform-sdk'
-import perplex from 'perplex'
+import Lexer from 'perplex'
 import Parser from 'pratt'
-import type { Writable } from '../types'
 import { nestedLookup } from '../helpers'
+import type { Writable } from '../types'
 
 type MatchFunc = (target: any) => boolean
 
@@ -72,7 +72,7 @@ export const parseFilterExpression = (
 }
 
 const getLexer = (value: string) =>
-  new perplex(value)
+  new Lexer<string>(value)
     .token('MISSING', /missing(?![-_a-z0-9]+)/i)
     .token('EXISTS', /exists(?![-_a-z0-9]+)/i)
     .token('RANGE', /range(?![-_a-z0-9]+)/i)