Clean up the oopsie. Rebuild the blank exercises.

2026-07-16 13:13:19 +09:00 · 2021-05-09 00:39:21 +12:00
parent b984cb4c6f
commit d28d80c46f
1565 changed files with 27186 additions and 199003 deletions
@@ -1,3 +1,419 @@
+## 8.2.4 (2021-05-04)
+
+### Bug fixes
+
+Fix spec conformity in corner case 'for await (async of ...)'.
+
+## 8.2.3 (2021-05-04)
+
+### Bug fixes
+
+Fix an issue where the library couldn't parse 'for (async of ...)'.
+
+Fix a bug in UTF-16 decoding that would read characters incorrectly in some circumstances.
+
+## 8.2.2 (2021-04-29)
+
+### Bug fixes
+
+Fix a bug where a class field initialized to an async arrow function wouldn't allow await inside it. Same issue existed for generator arrow functions with yield.
+
+## 8.2.1 (2021-04-24)
+
+### Bug fixes
+
+Fix a regression introduced in 8.2.0 where static or async class methods with keyword names fail to parse.
+
+## 8.2.0 (2021-04-24)
+
+### New features
+
+Add support for ES2022 class fields and private methods.
+
+## 8.1.1 (2021-04-12)
+
+### Various
+
+Stop shipping source maps in the NPM package.
+
+## 8.1.0 (2021-03-09)
+
+### Bug fixes
+
+Fix a spurious error in nested destructuring arrays.
+
+### New features
+
+Expose `allowAwaitOutsideFunction` in CLI interface.
+
+Make `allowImportExportAnywhere` also apply to `import.meta`.
+
+## 8.0.5 (2021-01-25)
+
+### Bug fixes
+
+Adjust package.json to work with Node 12.16.0 and 13.0-13.6.
+
+## 8.0.4 (2020-10-05)
+
+### Bug fixes
+
+Make `await x ** y` an error, following the spec.
+
+Fix potentially exponential regular expression.
+
+## 8.0.3 (2020-10-02)
+
+### Bug fixes
+
+Fix a wasteful loop during `Parser` creation when setting `ecmaVersion` to `"latest"`.
+
+## 8.0.2 (2020-09-30)
+
+### Bug fixes
+
+Make the TypeScript types reflect the current allowed values for `ecmaVersion`.
+
+Fix another regexp/division tokenizer issue.
+
+## 8.0.1 (2020-08-12)
+
+### Bug fixes
+
+Provide the correct value in the `version` export.
+
+## 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)
+
+### New features
+
+Add support for logical assignment operators.
+
+Add support for numeric separators.
+
+## 7.3.1 (2020-06-11)
+
+### Bug fixes
+
+Make the string in the `version` export match the actual library version.
+
+## 7.3.0 (2020-06-11)
+
+### Bug fixes
+
+Fix a bug that caused parsing of object patterns with a property named `set` that had a default value to fail.
+
+### New features
+
+Add support for optional chaining (`?.`).
+
+## 7.2.0 (2020-05-09)
+
+### Bug fixes
+
+Fix precedence issue in parsing of async arrow functions.
+
+### New features
+
+Add support for nullish coalescing.
+
+Add support for `import.meta`.
+
+Support `export * as ...` syntax.
+
+Upgrade to Unicode 13.
+
+## 6.4.1 (2020-03-09)
+
+### Bug fixes
+
+More carefully check for valid UTF16 surrogate pairs in regexp validator.
+
+## 7.1.1 (2020-03-01)
+
+### Bug fixes
+
+Treat `\8` and `\9` as invalid escapes in template strings.
+
+Allow unicode escapes in property names that are keywords.
+
+Don't error on an exponential operator expression as argument to `await`.
+
+More carefully check for valid UTF16 surrogate pairs in regexp validator.
+
+## 7.1.0 (2019-09-24)
+
+### Bug fixes
+
+Disallow trailing object literal commas when ecmaVersion is less than 5.
+
+### New features
+
+Add a static `acorn` property to the `Parser` class that contains the entire module interface, to allow plugins to access the instance of the library that they are acting on.
+
+## 7.0.0 (2019-08-13)
+
+### Breaking changes
+
+Changes the node format for dynamic imports to use the `ImportExpression` node type, as defined in [ESTree](https://github.com/estree/estree/blob/master/es2020.md#importexpression).
+
+Makes 10 (ES2019) the default value for the `ecmaVersion` option.
+
+## 6.3.0 (2019-08-12)
+
+### New features
+
+`sourceType: "module"` can now be used even when `ecmaVersion` is less than 6, to parse module-style code that otherwise conforms to an older standard.
+
+## 6.2.1 (2019-07-21)
+
+### Bug fixes
+
+Fix bug causing Acorn to treat some characters as identifier characters that shouldn't be treated as such.
+
+Fix issue where setting the `allowReserved` option to `"never"` allowed reserved words in some circumstances.
+
+## 6.2.0 (2019-07-04)
+
+### Bug fixes
+
+Improve valid assignment checking in `for`/`in` and `for`/`of` loops.
+
+Disallow binding `let` in patterns.
+
+### New features
+
+Support bigint syntax with `ecmaVersion` >= 11.
+
+Support dynamic `import` syntax with `ecmaVersion` >= 11.
+
+Upgrade to Unicode version 12.
+
+## 6.1.1 (2019-02-27)
+
+### Bug fixes
+
+Fix bug that caused parsing default exports of with names to fail.
+
+## 6.1.0 (2019-02-08)
+
+### Bug fixes
+
+Fix scope checking when redefining a `var` as a lexical binding.
+
+### New features
+
+Split up `parseSubscripts` to use an internal `parseSubscript` method to make it easier to extend with plugins.
+
+## 6.0.7 (2019-02-04)
+
+### Bug fixes
+
+Check that exported bindings are defined.
+
+Don't treat `\u180e` as a whitespace character.
+
+Check for duplicate parameter names in methods.
+
+Don't allow shorthand properties when they are generators or async methods.
+
+Forbid binding `await` in async arrow function's parameter list.
+
+## 6.0.6 (2019-01-30)
+
+### Bug fixes
+
+The content of class declarations and expressions is now always parsed in strict mode.
+
+Don't allow `let` or `const` to bind the variable name `let`.
+
+Treat class declarations as lexical.
+
+Don't allow a generator function declaration as the sole body of an `if` or `else`.
+
+Ignore `"use strict"` when after an empty statement.
+
+Allow string line continuations with special line terminator characters.
+
+Treat `for` bodies as part of the `for` scope when checking for conflicting bindings.
+
+Fix bug with parsing `yield` in a `for` loop initializer.
+
+Implement special cases around scope checking for functions.
+
+## 6.0.5 (2019-01-02)
+
+### Bug fixes
+
+Fix TypeScript type for `Parser.extend` and add `allowAwaitOutsideFunction` to options type.
+
+Don't treat `let` as a keyword when the next token is `{` on the next line.
+
+Fix bug that broke checking for parentheses around an object pattern in a destructuring assignment when `preserveParens` was on.
+
+## 6.0.4 (2018-11-05)
+
+### Bug fixes
+
+Further improvements to tokenizing regular expressions in corner cases.
+
+## 6.0.3 (2018-11-04)
+
+### Bug fixes
+
+Fix bug in tokenizing an expression-less return followed by a function followed by a regular expression.
+
+Remove stray symlink in the package tarball.
+
+## 6.0.2 (2018-09-26)
+
+### Bug fixes
+
+Fix bug where default expressions could fail to parse inside an object destructuring assignment expression.
+
+## 6.0.1 (2018-09-14)
+
+### Bug fixes
+
+Fix wrong value in `version` export.
+
+## 6.0.0 (2018-09-14)
+
+### Bug fixes
+
+Better handle variable-redefinition checks for catch bindings and functions directly under if statements.
+
+Forbid `new.target` in top-level arrow functions.
+
+Fix issue with parsing a regexp after `yield` in some contexts.
+
+### New features
+
+The package now comes with TypeScript definitions.
+
+### Breaking changes
+
+The default value of the `ecmaVersion` option is now 9 (2018).
+
+Plugins work differently, and will have to be rewritten to work with this version.
+
+The loose parser and walker have been moved into separate packages (`acorn-loose` and `acorn-walk`).
+
+## 5.7.3 (2018-09-10)
+
+### Bug fixes
+
+Fix failure to tokenize regexps after expressions like `x.of`.
+
+Better error message for unterminated template literals.
+
+## 5.7.2 (2018-08-24)
+
+### Bug fixes
+
+Properly handle `allowAwaitOutsideFunction` in for statements.
+
+Treat function declarations at the top level of modules like let bindings.
+
+Don't allow async function declarations as the only statement under a label.
+
+## 5.7.0 (2018-06-15)
+
+### New features
+
+Upgraded to Unicode 11.
+
+## 5.6.0 (2018-05-31)
+
+### New features
+
+Allow U+2028 and U+2029 in string when ECMAVersion >= 10.
+
+Allow binding-less catch statements when ECMAVersion >= 10.
+
+Add `allowAwaitOutsideFunction` option for parsing top-level `await`.
+
+## 5.5.3 (2018-03-08)
+
+### Bug fixes
+
+A _second_ republish of the code in 5.5.1, this time with yarn, to hopefully get valid timestamps.
+
+## 5.5.2 (2018-03-08)
+
+### Bug fixes
+
+A republish of the code in 5.5.1 in an attempt to solve an issue with the file timestamps in the npm package being 0.
+
+## 5.5.1 (2018-03-06)
+
+### Bug fixes
+
+Fix misleading error message for octal escapes in template strings.
+
+## 5.5.0 (2018-02-27)
+
+### New features
+
+The identifier character categorization is now based on Unicode version 10.
+
+Acorn will now validate the content of regular expressions, including new ES9 features.
+
+## 5.4.0 (2018-02-01)
+
+### Bug fixes
+
+Disallow duplicate or escaped flags on regular expressions.
+
+Disallow octal escapes in strings in strict mode.
+
+### New features
+
+Add support for async iteration.
+
+Add support for object spread and rest.
+
+## 5.3.0 (2017-12-28)
+
+### Bug fixes
+
+Fix parsing of floating point literals with leading zeroes in loose mode.
+
+Allow duplicate property names in object patterns.
+
+Don't allow static class methods named `prototype`.
+
+Disallow async functions directly under `if` or `else`.
+
+Parse right-hand-side of `for`/`of` as an assignment expression.
+
+Stricter parsing of `for`/`in`.
+
+Don't allow unicode escapes in contextual keywords.
+
+### New features
+
+Parsing class members was factored into smaller methods to allow plugins to hook into it.
+
 ## 5.2.1 (2017-10-30)

 ### Bug fixes
@@ -12,8 +428,6 @@ Fix token context tracking for `class` and `function` in property-name position.

 Make sure `%*` isn't parsed as a valid operator.

-The `full` and `fullAncestor` walkers no longer visit nodes multiple times.
-
 Allow shorthand properties `get` and `set` to be followed by default values.

 Disallow `super` when not in callee or object position.
@@ -50,14 +464,10 @@ Don't error when `yield` is used as a property name.

 Allow `async` as a shorthand object property.

-Make the ES module version of the loose parser actually work.
-
 ### New features

 Implement the [template literal revision proposal](https://github.com/tc39/proposal-template-literal-revision) for ES9.

-New walker functions `full` and `fullAncestor`.
-
 ## 5.0.3 (2017-04-01)

 ### Bug fixes
@@ -96,26 +506,21 @@ Allow all forms of member expressions to be parenthesized as lvalue.

 ### Bug fixes

-Don't expect semicolons after default-exported functions or classes,
-even when they are expressions.
+Don't expect semicolons after default-exported functions or classes, even when they are expressions.

-Check for use of `'use strict'` directives in non-simple parameter
-functions, even when already in strict mode.
+Check for use of `'use strict'` directives in non-simple parameter functions, even when already in strict mode.

 ## 4.0.9 (2017-02-06)

 ### Bug fixes

-Fix incorrect error raised for parenthesized simple assignment
-targets, so that `(x) = 1` parses again.
+Fix incorrect error raised for parenthesized simple assignment targets, so that `(x) = 1` parses again.

 ## 4.0.8 (2017-02-03)

 ### Bug fixes

-Solve spurious parenthesized pattern errors by temporarily erring on
-the side of accepting programs that our delayed errors don't handle
-correctly yet.
+Solve spurious parenthesized pattern errors by temporarily erring on the side of accepting programs that our delayed errors don't handle correctly yet.

 ## 4.0.7 (2017-02-02)

@@ -123,16 +528,13 @@ correctly yet.

 Accept invalidly rejected code like `(x).y = 2` again.

-Don't raise an error when a function _inside_ strict code has a
-non-simple parameter list.
+Don't raise an error when a function _inside_ strict code has a non-simple parameter list.

 ## 4.0.6 (2017-02-02)

 ### Bug fixes

-Fix exponential behavior (manifesting itself as a complete hang for
-even relatively small source files) introduced by the new 'use strict'
-check.
+Fix exponential behavior (manifesting itself as a complete hang for even relatively small source files) introduced by the new 'use strict' check.

 ## 4.0.5 (2017-02-02)

@@ -154,8 +556,6 @@ Disallow labeled declarations.

 ### Bug fixes

-Fix issue with loading acorn_loose.js with an AMD loader.
-
 Fix crash when `export` was followed by a keyword that can't be
 exported.

@@ -163,8 +563,7 @@ exported.

 ### Bug fixes

-Allow regular function declarations inside single-statement `if`
-branches in loose mode. Forbid them entirely in strict mode.
+Allow regular function declarations inside single-statement `if` branches in loose mode. Forbid them entirely in strict mode.

 Properly parse properties named `async` in ES2017 mode.

@@ -176,8 +575,7 @@ Fix bug where reserved words were broken in ES2017 mode.

 Don't ignore period or 'e' characters after octal numbers.

-Fix broken parsing for call expressions in default parameter values
-of arrow functions.
+Fix broken parsing for call expressions in default parameter values of arrow functions.

 ## 4.0.1 (2016-08-08)

@@ -191,8 +589,7 @@ Fix false positives in duplicated export name errors.

 The default `ecmaVersion` option value is now 7.

-A number of internal method signatures changed, so plugins might need
-to be updated.
+A number of internal method signatures changed, so plugins might need to be updated.

 ### Bug fixes

@@ -200,8 +597,7 @@ The parser now raises errors on duplicated export names.

 `arguments` and `eval` can now be used in shorthand properties.

-Duplicate parameter names in non-simple argument lists now always
-produce an error.
+Duplicate parameter names in non-simple argument lists now always produce an error.

 ### New features

@@ -210,8 +606,7 @@ The `ecmaVersion` option now also accepts year-style version numbers

 Support for `async`/`await` syntax when `ecmaVersion` is >= 8.

-Support for trailing commas in call expressions when `ecmaVersion`
-is >= 8.
+Support for trailing commas in call expressions when `ecmaVersion` is >= 8.

 ## 3.3.0 (2016-07-25)

@@ -223,8 +618,7 @@ Fix parser crash when parsing an array pattern with a hole.

 ### New features

-Implement check against complex argument lists in functions that
-enable strict mode in ES7.
+Implement check against complex argument lists in functions that enable strict mode in ES7.

 ## 3.2.0 (2016-06-07)

@@ -235,44 +629,29 @@ environment.

 Properly reject shorthand properties whose name is a keyword.

-Don't crash when the loose parser is called without options object.
-
 ### New features

-Visitors created with `visit.make` now have their base as _prototype_,
-rather than copying properties into a fresh object.
-
-Make it possible to use `visit.ancestor` with a walk state.
+Visitors created with `visit.make` now have their base as _prototype_, rather than copying properties into a fresh object.

 ## 3.1.0 (2016-04-18)

 ### Bug fixes

-Fix issue where the loose parser created invalid TemplateElement nodes
-for unclosed template literals.
-
-Properly tokenize the division operator directly after a function
-expression.
+Properly tokenize the division operator directly after a function expression.

 Allow trailing comma in destructuring arrays.

-### New features
-
-The walker now allows defining handlers for `CatchClause` nodes.
-
 ## 3.0.4 (2016-02-25)

 ### Fixes

-Allow update expressions as left-hand-side of the ES7 exponential
-operator.
+Allow update expressions as left-hand-side of the ES7 exponential operator.

 ## 3.0.2 (2016-02-10)

 ### Fixes

-Fix bug that accidentally made `undefined` a reserved word when
-parsing ES7.
+Fix bug that accidentally made `undefined` a reserved word when parsing ES7.

 ## 3.0.0 (2016-02-10)

@@ -280,26 +659,21 @@ parsing ES7.

 The default value of the `ecmaVersion` option is now 6 (used to be 5).

-Support for comprehension syntax (which was dropped from the draft
-spec) has been removed.
+Support for comprehension syntax (which was dropped from the draft spec) has been removed.

 ### Fixes

-`let` and `yield` are now “contextual keywords”, meaning you can
-mostly use them as identifiers in ES5 non-strict code.
+`let` and `yield` are now “contextual keywords”, meaning you can mostly use them as identifiers in ES5 non-strict code.

-A parenthesized class or function expression after `export default` is
-now parsed correctly.
+A parenthesized class or function expression after `export default` is now parsed correctly.

 ### New features

-When `ecmaVersion` is set to 7, Acorn will parse the exponentiation
-operator (`**`).
+When `ecmaVersion` is set to 7, Acorn will parse the exponentiation operator (`**`).

 The identifier character ranges are now based on Unicode 8.0.0.

-Plugins can now override the `raiseRecoverable` method to override the
-way non-critical errors are handled.
+Plugins can now override the `raiseRecoverable` method to override the way non-critical errors are handled.

 ## 2.7.0 (2016-01-04)

@@ -307,25 +681,12 @@ way non-critical errors are handled.

 Stop allowing rest parameters in setters.

-Make sure the loose parser always attaches a `local` property to
-`ImportNamespaceSpecifier` nodes.
-
 Disallow `y` rexexp flag in ES5.

 Disallow `\00` and `\000` escapes in strict mode.

 Raise an error when an import name is a reserved word.

-## 2.6.4 (2015-11-12)
-
-### Fixes
-
-Fix crash in loose parser when parsing invalid object pattern.
-
-### New features
-
-Support plugins in the loose parser.
-
 ## 2.6.2 (2015-11-10)

 ### Fixes
@@ -346,28 +707,17 @@ Forbid using a comma after a rest pattern in an array destructuring.

 Support parsing stdin in command-line tool.

-## 2.5.2 (2015-10-27)
-
-### Fixes
-
-Fix bug where the walker walked an exported `let` statement as an
-expression.
-
 ## 2.5.0 (2015-10-27)

 ### Fixes

 Fix tokenizer support in the command-line tool.

-In the loose parser, don't allow non-string-literals as import
-sources.
-
 Stop allowing `new.target` outside of functions.

 Remove legacy `guard` and `guardedHandler` properties from try nodes.

-Stop allowing multiple `__proto__` properties on an object literal in
-strict mode.
+Stop allowing multiple `__proto__` properties on an object literal in strict mode.

 Don't allow rest parameters to be non-identifier patterns.