style(tsconfig): no implicit returns

src/index.ts

@@ -11,13 +11,16 @@ import escape from './escape'
 import Tokenizer from './parse/tokenizer'; // tslint:disable-line
 import {Node} from './node' // tslint:disable-line
 
-export default {
-  parser: parse,
+export const parser = parse
+export const compiler = stringify
+export const data = { escape }
+
+export {
   blockTokenizers,
   inlineTokenizers,
-  compiler: stringify,
   visitors,
-  data: {
-    escape,
-  },
+  Tokenizer,
 }
+
+export { ParserOptions } from './parse/parser'
+export { CompilerOptions } from './stringify/compiler'

src/parse/block-tokenizers/code.ts

@@ -87,6 +87,8 @@ const tokenizeCode: Tokenizer = function (parser, value, silent) {
 
     return parser.eat(subvalue)(renderCodeBlock(content))
   }
+
+  return false
 }
 
 export default tokenizeCode

src/parse/block-tokenizers/definition.ts

@@ -70,7 +70,7 @@ const tokenizeDefinition: Tokenizer = function (parser, value, silent) {
   character = value.charAt(index)
 
   if (character !== '[') {
-    return
+    return false
   }
 
   index++
@@ -97,7 +97,7 @@ const tokenizeDefinition: Tokenizer = function (parser, value, silent) {
     value.charAt(index) !== ']' ||
     value.charAt(index + 1) !== ':'
   ) {
-    return
+    return false
   }
 
   const identifier = queue
@@ -142,7 +142,7 @@ const tokenizeDefinition: Tokenizer = function (parser, value, silent) {
 
     if (character !== isEnclosedURLCharacter.delimiter) {
       if (commonmark) {
-        return
+        return false
       }
 
       index -= queue.length + 1
@@ -169,7 +169,7 @@ const tokenizeDefinition: Tokenizer = function (parser, value, silent) {
   }
 
   if (!queue) {
-    return
+    return false
   }
 
   let url = queue
@@ -206,7 +206,7 @@ const tokenizeDefinition: Tokenizer = function (parser, value, silent) {
     queue = ''
     index = subvalue.length
   } else if (!queue) {
-    return
+    return false
   } else {
     subvalue += queue + character
     index = subvalue.length
@@ -224,7 +224,7 @@ const tokenizeDefinition: Tokenizer = function (parser, value, silent) {
         character = value.charAt(index)
 
         if (character === '\n' || character === test) {
-          return
+          return false
         }
 
         queue += '\n'
@@ -237,7 +237,7 @@ const tokenizeDefinition: Tokenizer = function (parser, value, silent) {
     character = value.charAt(index)
 
     if (character !== test) {
-      return
+      return false
     }
 
     beforeTitle = subvalue
@@ -280,6 +280,8 @@ const tokenizeDefinition: Tokenizer = function (parser, value, silent) {
       url,
     })
   }
+
+  return false
 }
 
 tokenizeDefinition.onlyAtTop = true

src/parse/block-tokenizers/new-line.ts

@@ -16,7 +16,7 @@ const tokenizeNewline: Tokenizer = function (parser, value, silent) {
   let character = value.charAt(0)
 
   if (character !== '\n') {
-    return
+    return false
   }
 
   /* istanbul ignore if - never used (yet) */
@@ -46,6 +46,7 @@ const tokenizeNewline: Tokenizer = function (parser, value, silent) {
   }
 
   parser.eat(subvalue)
+  return true
 }
 
 export default tokenizeNewline

src/parse/block-tokenizers/thematic-break.ts

@@ -30,7 +30,7 @@ const tokenizeThematicBreak: Tokenizer = function (parser, value, silent) {
   }
 
   if (!ruleMarkers.has(character)) {
-    return
+    return false
   }
 
   const marker = character
@@ -61,9 +61,10 @@ const tokenizeThematicBreak: Tokenizer = function (parser, value, silent) {
         type: 'thematicBreak',
       })
     } else {
-      return
+      return false
     }
   }
+  return false
 }
 
 export default tokenizeThematicBreak

src/parse/block-tokenizers/yaml-front-matter.ts

@@ -24,7 +24,7 @@ const tokenizeYAMLFrontMatter: Tokenizer = function (parser, value, silent) {
     value.charAt(2) !== '-' ||
     value.charAt(3) !== '\n'
   ) {
-    return
+    return false
   }
 
   let subvalue = `${YAML_FENCE}\n`
@@ -62,6 +62,8 @@ const tokenizeYAMLFrontMatter: Tokenizer = function (parser, value, silent) {
       queue = ''
     }
   }
+
+  return false
 }
 
 tokenizeYAMLFrontMatter.onlyAtStart = true

src/parse/eat/html-cdata.ts

@@ -30,4 +30,5 @@ export default function eatHTMLCDATA (value: string): string {
       index++
     }
   }
+  return null
 }

src/parse/eat/html-closing-tag.ts

@@ -27,7 +27,7 @@ export default function eatHTMLClosingTag (value: string, isBlock?: boolean): st
     subqueue = character = value.charAt(++index)
 
     if (!isAlphabetic(character)) {
-      return
+      return null
     }
 
     index++
@@ -49,7 +49,7 @@ export default function eatHTMLClosingTag (value: string, isBlock?: boolean): st
     }
 
     if (isBlock && blockElements.indexOf(subqueue.toLowerCase()) === -1) {
-      return
+      return null
     }
 
     queue += subqueue
@@ -73,4 +73,5 @@ export default function eatHTMLClosingTag (value: string, isBlock?: boolean): st
       return `${queue}>`
     }
   }
+  return null
 }

src/parse/eat/html-comment.ts

@@ -34,12 +34,12 @@ function eatHTMLComment (value: string, settings: any): string {
 
       if (commonmark) {
         if (character === '>' && !hasNonDash) {
-          return
+          return null
         }
 
         if (character === '-') {
           if (value.charAt(index + 1) === '-') {
-            return
+            return null
           }
         } else {
           hasNonDash = true
@@ -50,6 +50,7 @@ function eatHTMLComment (value: string, settings: any): string {
       index++
     }
   }
+  return null
 }
 
 export default eatHTMLComment

src/parse/eat/html-declaration.ts

@@ -41,7 +41,7 @@ export default function eatHTMLDeclaration (value: string): string {
     character = value.charAt(index)
 
     if (!subqueue || !isWhiteSpace(character)) {
-      return
+      return null
     }
 
     queue += subqueue + character
@@ -58,4 +58,5 @@ export default function eatHTMLDeclaration (value: string): string {
       index++
     }
   }
+  return null
 }

src/parse/eat/html-opening-tag.ts

@@ -76,7 +76,7 @@ export default function eatHTMLOpeningTag (value: string, isBlock?: boolean): st
     subqueue = character = value.charAt(++index)
 
     if (!isAlphabetic(character)) {
-      return
+      return null
     }
 
     index++
@@ -98,7 +98,7 @@ export default function eatHTMLOpeningTag (value: string, isBlock?: boolean): st
     }
 
     if (isBlock && blockElements.indexOf(subqueue.toLowerCase()) === -1) {
-      return
+      return null
     }
 
     queue += subqueue
@@ -229,14 +229,14 @@ export default function eatHTMLOpeningTag (value: string, isBlock?: boolean): st
 
         if (!test.delimiter) {
           if (!subqueue.length) {
-            return
+            return null
           }
 
           index--
         } else if (character === test.delimiter) {
           subqueue += character
         } else {
-          return
+          return null
         }
 
         queue += subqueue
@@ -263,4 +263,5 @@ export default function eatHTMLOpeningTag (value: string, isBlock?: boolean): st
 
     return character === '>' ? queue + character : null
   }
+  return null
 }

src/parse/eat/html-processing-instructions.ts

@@ -34,4 +34,5 @@ function eatHTMLProcessingInstruction (value: string): string {
       index++
     }
   }
+  return null
 }

src/parse/inline-tokenizers/break.ts

@@ -24,7 +24,7 @@ const tokenizeBreak: Tokenizer = function (parser, value, silent) {
 
     if (character === '\n') {
       if (!breaks && index < MIN_BREAK_LENGTH) {
-        return
+        return false
       }
 
       /* istanbul ignore if - never used (yet) */
@@ -39,11 +39,12 @@ const tokenizeBreak: Tokenizer = function (parser, value, silent) {
     }
 
     if (character !== ' ') {
-      return
+      return false
     }
 
     queue += character
   }
+  return false
 }
 
 /**

src/parse/inline-tokenizers/deletion.ts

@@ -26,7 +26,7 @@ const tokenizeDeletion: Tokenizer = function (parser, value, silent) {
     value.charAt(1) !== '~' ||
     isWhiteSpace(value.charAt(2))
   ) {
-    return
+    return false
   }
 
   let index = 1
@@ -57,6 +57,7 @@ const tokenizeDeletion: Tokenizer = function (parser, value, silent) {
     preceding = previous
     previous = character
   }
+  return false
 }
 
 /**

src/parse/inline-tokenizers/emphasis.ts

@@ -35,7 +35,7 @@ const tokenizeEmphasis: Tokenizer = function (parser, value, silent) {
   let character = value.charAt(index)
 
   if (!~'*_'.indexOf(character)) {
-    return
+    return false
   }
 
   const pedantic = parser.options.pedantic
@@ -45,7 +45,7 @@ const tokenizeEmphasis: Tokenizer = function (parser, value, silent) {
   let queue = character = ''
 
   if (pedantic && isWhiteSpace(value.charAt(index))) {
-    return
+    return false
   }
 
   while (index < value.length) {
@@ -60,7 +60,7 @@ const tokenizeEmphasis: Tokenizer = function (parser, value, silent) {
 
       if (character !== marker) {
         if (!queue.trim() || prev === marker) {
-          return
+          return false
         }
 
         if (
@@ -95,6 +95,7 @@ const tokenizeEmphasis: Tokenizer = function (parser, value, silent) {
     queue += character
     index++
   }
+  return false
 }
 
 /**

src/parse/inline-tokenizers/escape.ts

@@ -29,6 +29,7 @@ const tokenizeEscape: Tokenizer = function (parser, value, silent) {
       )
     }
   }
+  return false
 }
 
 /*

src/parse/inline-tokenizers/strong.ts

@@ -22,7 +22,7 @@ const tokenizeStrong: Tokenizer = function (parser, value, silent) {
     !~'*_'.indexOf(character) ||
     value.charAt(++index) !== character
   ) {
-    return
+    return false
   }
 
   const pedantic = parser.options.pedantic
@@ -32,7 +32,7 @@ const tokenizeStrong: Tokenizer = function (parser, value, silent) {
   let queue = character = ''
 
   if (pedantic && isWhiteSpace(value.charAt(index))) {
-    return
+    return false
   }
 
   let prev: string
@@ -49,7 +49,7 @@ const tokenizeStrong: Tokenizer = function (parser, value, silent) {
 
       if (character !== marker) {
         if (!queue.trim()) {
-          return
+          return false
         }
 
         /* istanbul ignore if - never used (yet) */
@@ -76,6 +76,7 @@ const tokenizeStrong: Tokenizer = function (parser, value, silent) {
     queue += character
     index++
   }
+  return false
 }
 
 /**