style: fix linting

src/builtin/filters/array.ts

@@ -23,7 +23,7 @@ function concat<T1, T2> (v: T1[], arg: T2[] | T2): (T1 | T2)[] {
   return Array.prototype.concat.call(v, arg)
 }
 
-function slice<T> (v: T[], begin: number, length: number = 1): T[] {
+function slice<T> (v: T[], begin: number, length = 1): T[] {
   begin = begin < 0 ? v.length + begin : begin
   return v.slice(begin, begin + length)
 }

src/builtin/filters/math.ts

@@ -9,7 +9,7 @@ export default {
   'floor': (v: number) => Math.floor(v),
   'minus': (v: number, arg: number) => v - arg,
   'modulo': (v: number, arg: number) => v % arg,
-  'round': (v: number, arg: number = 0) => {
+  'round': (v: number, arg = 0) => {
     const amp = Math.pow(10, arg)
     return Math.round(v * amp) / amp
   },

src/builtin/filters/string.ts

@@ -37,13 +37,13 @@ function replaceFirst (v: string, arg1: string, arg2: string) {
   return stringify(v).replace(arg1, arg2)
 }
 
-function truncate (v: string, l: number = 50, o: string = '...') {
+function truncate (v: string, l = 50, o = '...') {
   v = stringify(v)
   if (v.length <= l) return v
   return v.substr(0, l - o.length) + o
 }
 
-function truncateWords (v: string, l: number = 15, o: string = '...') {
+function truncateWords (v: string, l = 15, o = '...') {
   const arr = v.split(/\s+/)
   let ret = arr.slice(0, l).join(' ')
   if (arr.length >= l) ret += o

src/builtin/tags/raw.ts

@@ -1,4 +1,4 @@
-import { TagToken, Token, ITagImplOptions, Context, Emitter, Hash } from '../../types'
+import { TagToken, Token, ITagImplOptions, Context } from '../../types'
 
 export default {
   parse: function (tagToken: TagToken, remainTokens: Token[]) {