acorn - npm Package Compare versions

Comparing version 7.4.0 to 8.0.0

CHANGELOG.md

@@ -0,1 +1,21 @@
+## 8.0.0 (2020-08-12)
+
+### Bug fixes
+
+Disallow expressions like `(a = b) = c`.
+
+Make non-octal escape sequences a syntax error in strict mode.
+
+### New features
+
+The package can now be loaded directly as an ECMAScript module in node 13+.
+
+Update to the set of Unicode properties from ES2021.
+
+### Breaking changes
+
+The `ecmaVersion` option is now required. For the moment, omitting it will still work with a warning, but that will change in a future release.
+
+Some changes to method signatures that may be used by plugins.
+
 ## 7.4.0 (2020-08-03)
@@ -2,0 +22,0 @@

package.json

@@ -8,3 +8,7 @@ {
   "module": "dist/acorn.mjs",
-  "version": "7.4.0",
+  "exports": {
+    "import": "./dist/acorn.mjs",
+    "require": "./dist/acorn.js"
+  },
+  "version": "8.0.0",
   "engines": {"node": ">=0.4.0"},
@@ -11,0 +15,0 @@ "maintainers": [

README.md

@@ -35,5 +35,5 @@ # Acorn
 **parse**`(input, options)` is the main interface to the library. The
-`input` parameter is a string, `options` can be undefined or an object
-setting some of the options listed below. The return value will be an
-abstract syntax tree object as specified by the [ESTree
+`input` parameter is a string, `options` must be an object setting
+some of the options listed below. The return value will be an abstract
+syntax tree object as specified by the [ESTree
 spec](https://github.com/estree/estree).
@@ -43,3 +43,3 @@
 let acorn = require("acorn");
-console.log(acorn.parse("1 + 1"));
+console.log(acorn.parse("1 + 1", {ecmaVersion: 2020}));
 ```
@@ -53,14 +53,15 @@
 
-Options can be provided by passing a second argument, which should be
-an object containing any of these fields:
+Options are provided by in a second argument, which should be an
+object containing any of these fields (only `ecmaVersion` is
+required):
 
 - **ecmaVersion**: Indicates the ECMAScript version to parse. Must be
-  either 3, 5, 6 (2015), 7 (2016), 8 (2017), 9 (2018), 10 (2019) or 11
-  (2020, partial support). This influences support for strict mode,
-  the set of reserved words, and support for new syntax features.
-  Default is 10.
+  either 3, 5, 6 (or 2015), 7 (2016), 8 (2017), 9 (2018), 10 (2019),
+  11 (2020), or 12 (2021, partial support), or `"latest"` (the latest
+  the library supports). This influences support for strict mode, the
+  set of reserved words, and support for new syntax features.
 
   **NOTE**: Only 'stage 4' (finalized) ECMAScript features are being
-  implemented by Acorn. Other proposed new features can be implemented
-  through plugins.
+  implemented by Acorn. Other proposed new features must be
+  implemented through plugins.
 
@@ -230,3 +231,3 @@ - **sourceType**: Indicate the mode the code should be parsed in. Can be
 var JSXParser = acorn.Parser.extend(jsx());
-JSXParser.parse("foo(<bar/>)");
+JSXParser.parse("foo(<bar/>)", {ecmaVersion: 2020});
 ```
@@ -233,0 +234,0 @@

No alert changes

Improved metrics

Total package byte prevSize

1129952

increased by0.86%

Lines of code

9620

increased by2.14%

Number of lines in readme file

271

increased by0.37%

No dependency changes