Implement hash and array literal syntax

.eslintignore

@@ -1,3 +1,4 @@
 /dist/
 /lib/parser.js
 /src/
+*.d.ts

lib/helpers.js

@@ -1,4 +1,4 @@
-import Exception from './exception';
+import Exception from './exception.js';
 
 function validateClose(open, close) {
   close = close.path ? close.path.original : close;
@@ -17,11 +17,11 @@ export function SourceLocation(source, locInfo) {
   this.source = source;
   this.start = {
     line: locInfo.first_line,
-    column: locInfo.first_column
+    column: locInfo.first_column,
   };
   this.end = {
     line: locInfo.last_line,
-    column: locInfo.last_column
+    column: locInfo.last_column,
   };
 }
 
@@ -36,7 +36,7 @@ export function id(token) {
 export function stripFlags(open, close) {
   return {
     open: open.charAt(2) === '~',
-    close: close.charAt(close.length - 3) === '~'
+    close: close.charAt(close.length - 3) === '~',
   };
 }
 
@@ -93,7 +93,7 @@ export function preparePath(data, sexpr, parts, loc) {
     tail,
     parts: head ? [head, ...tail] : tail,
     original,
-    loc
+    loc,
   };
 }
 
@@ -110,7 +110,7 @@ export function prepareMustache(path, params, hash, open, strip, locInfo) {
     hash,
     escaped,
     strip,
-    loc: this.locInfo(locInfo)
+    loc: this.locInfo(locInfo),
   };
 }
 
@@ -122,7 +122,7 @@ export function prepareRawBlock(openRawBlock, contents, close, locInfo) {
     type: 'Program',
     body: contents,
     strip: {},
-    loc: locInfo
+    loc: locInfo,
   };
 
   return {
@@ -134,7 +134,7 @@ export function prepareRawBlock(openRawBlock, contents, close, locInfo) {
     openStrip: {},
     inverseStrip: {},
     closeStrip: {},
-    loc: locInfo
+    loc: locInfo,
   };
 }
 
@@ -188,7 +188,7 @@ export function prepareBlock(
     openStrip: openBlock.strip,
     inverseStrip,
     closeStrip: close && close.strip,
-    loc: this.locInfo(locInfo)
+    loc: this.locInfo(locInfo),
   };
 }
 
@@ -203,12 +203,12 @@ export function prepareProgram(statements, loc) {
         source: firstLoc.source,
         start: {
           line: firstLoc.start.line,
-          column: firstLoc.start.column
+          column: firstLoc.start.column,
         },
         end: {
           line: lastLoc.end.line,
-          column: lastLoc.end.column
-        }
+          column: lastLoc.end.column,
+        },
       };
     }
   }
@@ -217,7 +217,7 @@ export function prepareProgram(statements, loc) {
     type: 'Program',
     body: statements,
     strip: {},
-    loc: loc
+    loc: loc,
   };
 }
 
@@ -232,6 +232,6 @@ export function preparePartialBlock(open, program, close, locInfo) {
     program,
     openStrip: open.strip,
     closeStrip: close && close.strip,
-    loc: this.locInfo(locInfo)
+    loc: this.locInfo(locInfo),
   };
 }

lib/index.js

@@ -1,6 +1,6 @@
-export { default as Visitor } from './visitor';
-export { default as WhitespaceControl } from './whitespace-control';
-export { default as parser } from './parser';
-export { default as Exception } from './exception';
-export { print, PrintVisitor } from './printer';
-export { parse, parseWithoutProcessing } from './parse';
+export { default as Visitor } from './visitor.js';
+export { default as WhitespaceControl } from './whitespace-control.js';
+export { default as parser } from './parser.js';
+export { default as Exception } from './exception.js';
+export { print, PrintVisitor } from './printer.js';
+export { parse, parseWithoutProcessing } from './parse.js';

lib/parse.js

@@ -1,6 +1,6 @@
-import parser from './parser';
-import WhitespaceControl from './whitespace-control';
-import * as Helpers from './helpers';
+import parser from './parser.js';
+import WhitespaceControl from './whitespace-control.js';
+import * as Helpers from './helpers.js';
 
 let baseHelpers = {};
 
@@ -19,13 +19,52 @@ export function parseWithoutProcessing(input, options) {
   parser.yy = baseHelpers;
 
   // Altering the shared object here, but this is ok as parser is a sync operation
-  parser.yy.locInfo = function(locInfo) {
+  parser.yy.locInfo = function (locInfo) {
     return new Helpers.SourceLocation(options && options.srcName, locInfo);
   };
 
+  let squareSyntax;
+
+  if (typeof options?.syntax?.square === 'function') {
+    squareSyntax = options.syntax.square;
+  } else if (options?.syntax?.square === 'node') {
+    squareSyntax = arrayLiteralNode;
+  } else {
+    squareSyntax = 'string';
+  }
+
+  let hashSyntax;
+
+  if (typeof options?.syntax?.hash === 'function') {
+    hashSyntax = options.syntax.hash;
+  } else {
+    hashSyntax = hashLiteralNode;
+  }
+
+  parser.yy.syntax = {
+    square: squareSyntax,
+    hash: hashSyntax,
+  };
+
   return parser.parse(input);
 }
 
+function arrayLiteralNode(array, loc) {
+  return {
+    type: 'ArrayLiteral',
+    items: array,
+    loc,
+  };
+}
+
+function hashLiteralNode(hash, loc) {
+  return {
+    type: 'HashLiteral',
+    pairs: hash.pairs,
+    loc,
+  };
+}
+
 export function parse(input, options) {
   let ast = parseWithoutProcessing(input, options);
   let strip = new WhitespaceControl(options);