Changes

Release Date: 25 January 2022

Core:

• Bugfix: fixed Array.prototype.join() when array is changed while iterating.

• Bugfix: fixed Array.prototype.slice() when array is changed while iterating.

• Bugfix: fixed Array.prototype.concat() when array is changed while iterating.

• Bugfix: fixed Array.prototype.reverse() when array is changed while iterating.

• Bugfix: fixed Buffer.concat() with subarrays. Thanks to Sylvain Etienne.

• Bugfix: fixed type confusion bug while resolving promises.

• Bugfix: fixed Function.prototype.apply() with large array arguments.

• Bugfix: fixed recursive async function calls.

• Bugfix: fixed function redeclaration. The bug was introduced in 0.7.0.

Release Date: 28 December 2021

nginx modules:

• Change: the js_include directive deprecated since 0.4.0 was removed.

• Change: PCRE/PCRE2-specific code was moved to the modules. This ensures that njs uses the same RegExp library as nginx.

Core:

• Bugfix: fixed decodeURI() and decodeURIComponent() with invalid byte strings. The bug was introduced in 0.4.3.

• Bugfix: fixed heap-use-after-free in await frame. The bug was introduced in 0.7.0.

• Bugfix: fixed WebCrypto sign() and verify() methods with OpenSSL 3.0.

• Bugfix: fixed exception throwing when RegExp match fails. The bug was introduced in 0.1.15.

• Bugfix: fixed catching of exception thrown in try block of async function. The bug was introduced in 0.7.0.

• Bugfix: fixed execution of async function in synchronous context. The bug was introduced in 0.7.0.

• Bugfix: fixed function redeclaration in CLI when interactive mode is on. The bug was introduced in 0.6.2.

• Bugfix: fixed typeof operator with DataView object.

• Bugfix: eliminated information leak in Buffer.from().

Release Date: 19 October 2021

nginx modules:

• Feature: Added HTTPS support for Fetch API.

• Feature: Added setReturnValue() method for http and stream.

Core:

• Feature: introduced Async/Await implementation.

• Feature: added WebCrypto API implementation.

• Bugfix: fixed copying of closures for declared functions. The bug was introduced in 0.6.0.

• Bugfix: fixed unhandled promise rejection in handle events.

• Bugfix: fixed Response.headers getter in Fetch API.

Release Date: 31 August 2021

nginx modules:

• Bugfix: fixed CPU hog when js_filter is registered in both directions.

Core:

• Feature: introduced AggregateError implementation.

• Feature: added remaining Promise constructor methods. The following methods were added: Promise.all() , Promise.allSettled() , Promise.any() , Promise.race() .

• Improvement: removed recursion from code generator.

• Bugfix: fixed rest parameter parsing without binding identifier.

• Bugfix: fixed resolve/reject callback for Promise.prototype.finally() .

• Bugfix: fixed %TypedArray%.prototype.join() with detached buffer.

• Bugfix: fixed memory leak in interactive shell.

Release Date: 29 June 2021

• Bugfix: fixed RegExpBuiltinExec() with UTF-8 only regexps. The bug was introduced in 0.4.2.

• Bugfix: fixed parsing of export default declaration with non-assignment expressions. Thanks to Artem S. Povalyukhin.

Release Date: 15 June 2021

Core:

• Feature: added let and const declaration support.

• Feature: added RegExp.prototype[Symbol.split].

• Feature: added sticky flag support for RegExp.

• Bugfix: fixed heap-buffer-overflow in String.prototype.lastIndexOf().

• Bugfix: fixed RegExp.prototype.test() according to the specification.

• Bugfix: fixed String.prototype.split() according to the specification.

• Bugfix: fixed use-of-uninitialized-value while tracking rejected promises.

• Bugfix: fixed njs.dump() for objects with circular references.

Release Date: 30 March 2021

nginx modules:

• Feature: added the js_var directive for http and stream.

Release Date: 09 March 2021

nginx modules:

• Feature: added the js_body_filter directive.

• Feature: introduced the s.status property for Stream Session object.

Core:

• Feature: added njs.on (exit) callback support.

• Bugfix: fixed property descriptor reuse for not extensible objects. Thanks to Artem S. Povalyukhin.

• Bugfix: fixed Object.freeze() and friends according to the specification. Thanks to Artem S. Povalyukhin.

• Bugfix: fixed Function() in CLI mode.

• Bugfix: fixed for-in iteration of typed array values. Thanks to Artem S. Povalyukhin.

Release Date: 16 February 2021

nginx modules:

• Feature: introduced ngx.fetch() method implementing Fetch API.

  The following properties and methods of Response object are implemented: arrayBuffer(), bodyUsed, json(), headers, ok, redirect, status, statusText, text(), type, url.

  Notable limitations: only the http:// scheme is supported, redirects are not handled.

  In collaboration with 洪志道 (Hong Zhi Dao).

• Feature: added the js_header_filter directive.

• Bugfix: fixed processing buffered data in body filter in stream module.

Core:

• Bugfix: fixed safe mode bypass in Function constructor.

• Bugfix: fixed Date.prototype.toISOString() with invalid date values.

Release Date: 01 December 2020

nginx modules:

• Feature: introduced global ngx object.

  The following methods were added:

  • ngx.log(level, message)

  The following properties were added:

  • ngx.INFO, ngx.WARN, ngx.ERR.

• Feature: added support for Buffer object where string is expected.

• Feature: added Buffer version of existing properties.

  The following properties were added:

  • r.requestBuffer (r.requestBody), r.responseBuffer (r.responseBody), r.rawVariables (r.variables), s.rawVariables (s.variables).

  The following events were added in the stream module:

  • upstream (upload), downstream (download).

• Improvement: added aliases to existing properties.

  The following properties were added:

  • r.requestText (r.requestBody), r.responseText (r.responseBody).

• Improvement: throwing an exception in r.internalRedirect() for a subrequest.

• Bugfix: fixed promise r.subrequest() with error_page redirect.

• Bugfix: fixed promise events handling.

Core:

• Feature: added TypeScript definitions for built-in modules. Thanks to Jakub Jirutka.

• Feature: tracking unhandled promise rejection.

• Feature: added initial iterator support. Thanks to Artem S. Povalyukhin.

• Improvement: TypeScript definitions are refactored. Thanks to Jakub Jirutka.

• Improvement: added forgotten support for Object.prototype.valueOf() in Buffer.from().

• Bugfix: fixed heap-use-after-free in JSON.parse().

• Bugfix: fixed heap-use-after-free in JSON.stringify().

• Bugfix: fixed JSON.stringify() for arrays resizable via getters.

• Bugfix: fixed heap-buffer-overflow for RegExp.prototype[Symbol.replace].

• Bugfix: fixed returned value for Buffer.prototype.write* functions.

• Bugfix: fixed querystring.stringify(). Thanks to Artem S. Povalyukhin.

• Bugfix: fixed the catch handler for Promise.prototype.finally().

• Bugfix: fixed querystring.parse().

Release Date: 29 September 2020

nginx modules:

• Bugfix: fixed location merge.

• Bugfix: fixed r.httpVersion for HTTP/2.

Core:

• Feature: added support for numeric separators (ES12).

• Feature: added remaining methods for %TypedArray%.prototype. The following methods were added: every(), filter(), find(), findIndex(), forEach(), includes(), indexOf(), lastIndexOf(), map(), reduce(), reduceRight(), reverse(), some().

• Feature: added %TypedArray% remaining methods. The following methods were added: from(), of().

• Feature: added DataView object.

• Feature: added Buffer object implementation.

• Feature: added support for ArrayBuffer in TextDecoder.prototype.decode()

• Feature: added support for Buffer object in crypto methods.

• Feature: added support for Buffer object in fs methods.

• Change: Hash.prototype.digest() and Hmac.prototype.digest() now return a Buffer instance instead of a byte string when encoding is not provided.

• Change: fs.readFile() and friends now return a Buffer instance instead of a byte string when encoding is not provided.

• Bugfix: fixed function prototype property handler while setting.

• Bugfix: fixed function constructor property handler while setting.

• Bugfix: fixed String.prototype.indexOf() for byte strings.

• Bugfix: fixed RegExpBuiltinExec() with a global flag and byte strings.

• Bugfix: fixed RegExp.prototype[Symbol.replace] the when replacement value is a function.

• Bugfix: fixed TextDecoder.prototype.decode() with non-zero TypedArray offset.

Release Date: 11 August 2020

Core:

• Feature: added Query String module.

• Feature: improved fs.mkdir() to support recursive directory creation. Thanks to Artem S. Povalyukhin.

• Feature: improved fs.rmdir() to support recursive directory removal. Thanks to Artem S. Povalyukhin.

• Feature: introduced UTF-8 decoder according to WHATWG encoding spec.

• Feature: added TextDecoder() and TextEncoder() implementation.

• Bugfix: fixed parsing return statement without semicolon.

• Bugfix: fixed njs_number_to_int32() for big-endian platforms.

• Bugfix: fixed unit test on big-endian platforms.

• Bugfix: fixed regexp-literals parsing with “=” characters.

• Bugfix: fixed pre/post increment/decrement in assignment operations.

Release Date: 07 July 2020

Core:

• Feature: added RegExp.prototype[Symbol.replace].

• Feature: introduced line level backtrace.

• Feature: added %TypedArray%.prototype.sort().

• Feature: extended fs module. Added mkdir(), readdir(), rmdir(), and friends.

• Improvement: parser refactoring.

• Bugfix: fixed TypedScript API description for HTTP headers.

• Bugfix: fixed TypedScript API description for NjsByteString type.

• Bugfix: fixed String.prototype.repeat() according to the specification.

• Bugfix: fixed String.prototype.replace() according to the specification.

• Bugfix: fixed parsing of flags for regexp literals.

• Bugfix: fixed index generation for global objects in generator.

• Bugfix: fixed %TypedArray%.prototype.copyWithin() with nonzero byte offset.

• Bugfix: fixed Array.prototype.splice() for sparse arrays.

• Bugfix: fixed Array.prototype.reverse() for sparse arrays.

• Bugfix: fixed Array.prototype.sort() for sparse arrays.

Release Date: 19 May 2020

nginx modules:

• Feature: added support for multi-value headers in r.headersIn{}.

• Feature: introduced raw headers API: r.rawHeadersIn{} and r.rawHeadersOut{}.

• Feature: added TypeScript API description.

Core:

• Bugfix: fixed Array.prototype.slice() for sparse arrays.

Release Date: 23 April 2020

nginx modules:

• Feature: added support for multi-value headers in r.headersOut{}.

• Feature: added js_import directive for http and stream.

• Improvement: improved iteration over r.headersOut{} with special headers.

• Improvement: improved iteration over r.headersOut{} with duplicates.

• Change: r.responseBody property handler now returns undefined instead of throwing an exception if the response body is not available.

Core:

• Feature: added script arguments support in CLI.

• Feature: converting externals values to native js objects.

• Bugfix: fixed NULL-pointer dereference in __proto__ property handler.

• Bugfix: fixed handling of no-newline at the end of the script.

• Bugfix: fixed RegExp() constructor with empty pattern and non-empty flags.

• Bugfix: fixed String.prototype.replace() when function returns non-string.

• Bugfix: fixed reading of pseudofiles in fs.

Release Date: 03 March 2020

nginx modules:

• Feature: added detached mode for r.subrequest(). Responses to detached subrequests are ignored. Unlike ordinary subrequests, a detached subrequest can be created inside a variable handler.

Core:

• Feature: added promises API for fs module. Thanks to Artem S. Povalyukhin.

• Feature: extended fs module. Added access(), symlink(), unlink(), realpath(), and friends. Thanks to Artem S. Povalyukhin.

• Improvement: introduced memory-efficient ordinary arrays.

• Improvement: lexer refactoring.

• Bugfix: fixed matching of native functions in backtraces.

• Bugfix: fixed callback invocations in fs module. Thanks to Artem S. Povalyukhin.

• Bugfix: fixed Object.getOwnPropertySymbols().

• Bugfix: fixed heap-buffer-overflow in njs_json_append_string().

• Bugfix: fixed encodeURI() and decodeURI() according to the specification.

• Bugfix: fixed Number.prototype.toPrecision().

• Bugfix: fixed handling of space argument in JSON.stringify().

• Bugfix: fixed JSON.stringify() with Number() and String() objects.

• Bugfix: fixed Unicode Escaping in JSON.stringify() according to specification.

• Bugfix: fixed non-native module importing. Thanks to 洪志道 (Hong Zhi Dao).

• Bugfix: fixed njs.dump() with the Date() instance in a container.

Release Date: 21 January 2020

nginx modules:

• Feature: added Promise support for r.subrequest(). If a callback is not provided, r.subrequest() returns an ordinary Promise object that resolves to a subrequest response object.

• Change: r.parent property handler now returns undefined instead of throwing an exception if a parent object is not available.

Core:

• Feature: added Promise support. Implemented according to the specification without: Promise.all(), Promise.allSettled(), Promise.race().

• Feature: added initial Typed-arrays support. Thanks to Tiago Natel de Moura.

• Feature: added ArrayBuffer support. Thanks to Tiago Natel de Moura.

• Feature: added initial Symbol support. Thanks to Artem S. Povalyukhin.

• Feature: added externals support for JSON.stringify().

• Feature: added Object.is(). Thanks to Artem S. Povalyukhin.

• Feature: added Object.setPrototypeOf(). Thanks to Artem S. Povalyukhin.

• Feature: introduced nullish coalescing operator.

• Bugfix: fixed Object.getPrototypeOf() according to the specification.

• Bugfix: fixed Object.prototype.valueOf() according to the specification.

• Bugfix: fixed JSON.stringify() with unprintable values and replacer function.

• Bugfix: fixed operator in according to the specification.

• Bugfix: fixed Object.defineProperties() according to the specification.

• Bugfix: fixed Object.create() according to the specification. Thanks to Artem S. Povalyukhin.

• Bugfix: fixed Number.prototype.toString(radix) when fast-math is enabled.

• Bugfix: fixed RegExp() instance properties.

• Bugfix: fixed import segfault. Thanks to 洪志道 (Hong Zhi Dao).

Release Date: 19 November 2019

nginx modules:

• Improvement: refactored iteration over external objects.

Core:

• Feature: added Object.assign().

• Feature: added Array.prototype.copyWithin().

• Feature: added support for labels in console.time().

• Change: removed console.help() from CLI.

• Improvement: moved constructors and top-level objects to global object.

• Improvement: arguments validation for configure script.

• Improvement: refactored JSON methods.

• Bugfix: fixed heap-buffer-overflow in njs_array_reverse_iterator() function. The following functions were affected: Array.prototype.lastIndexOf(), Array.prototype.reduceRight().

• Bugfix: fixed [[Prototype]] slot of NativeErrors.

• Bugfix: fixed NativeError.prototype.message properties.

• Bugfix: added conversion of this value to object in Array.prototype functions.

• Bugfix: fixed iterator for Array.prototype.find() and Array.prototype.findIndex() functions.

• Bugfix: fixed Array.prototype.includes() and Array.prototype.join() with undefined argument.

• Bugfix: fixed constructor property of Hash and Hmac objects.

• Bugfix: fixed __proto__ property of getters and setters.

• Bugfix: fixed Date object string formatting.

• Bugfix: fixed handling of NaN and -0 arguments in Math.min() and Math.max().

• Bugfix: fixed Math.round() according to the specification.

• Bugfix: reimplemented bound functions according to the specification.

Release Date: 22 October 2019

nginx modules:

• Improvement: getting special headers from r.headersIn{}.

Core:

• Feature: added new Function() support.

• Feature: added Number.prototype.toFixed().

• Feature: added Number.prototype.toPrecision().

• Feature: added Number.prototype.toExponential().

• Improvement: making prototype property of function instances writable.

• Improvement: limiting recursion depth while compiling.

• Improvement: moving global functions to the global object.

• Bugfix: fixed prototype mutation for object literals.

• Bugfix: fixed heap-buffer-overflow while parsing regexp literals.

• Bugfix: fixed integer-overflow while parsing exponent of number literals.

• Bugfix: fixed parseFloat().

• Bugfix: fixed Array.prototype functions according to the specification. The following functions were fixed: every, includes, indexOf, filter, find, findIndex, forEach, lastIndexOf, map, pop, push, reduce, reduceRight, shift, some, unshift.

• Bugfix: fixed handing of accessor descriptors in Object.freeze().

• Bugfix: fixed String.prototype.replace() when first argument is not a string.

• Bugfix: fixed stack-use-after-scope in Array.prototype.map().

• Bugfix: Date.prototype.toUTCString() format was aligned to ES9.

• Bugfix: fixed buffer overflow in Number.prototype.toString(radix).

• Bugfix: fixed Regexp.prototype.test() for regexps with backreferences.

• Bugfix: fixed Array.prototype.map() for objects with nonexistent values.

• Bugfix: fixed Array.prototype.pop() and shift() for sparse objects.

• Bugfix: fixed Date.UTC() according to the specification.

• Bugfix: fixed Date() constructor according to the specification.

• Bugfix: fixed type of Date.prototype. Thanks to Artem S. Povalyukhin.

• Bugfix: fixed Date.prototype.setTime(). Thanks to Artem S. Povalyukhin.

• Bugfix: fixed default number of arguments expected by built-in functions.

• Bugfix: fixed caller and arguments properties of a function instance. Thanks to Artem S. Povalyukhin.

Release Date: 15 August 2019

Core:

• Bugfix: fixed module importing using require(). The bug was introduced in 0.3.4.

• Bugfix: fixed [[SetPrototypeOf]].

Release Date: 13 August 2019

Core:

• Feature: added Object shorthand methods and computed property names. Thanks to 洪志道 (Hong Zhi Dao) and Artem S. Povalyukhin.

• Feature: added getter/setter literal support. Thanks to 洪志道 (Hong Zhi Dao) and Artem S. Povalyukhin.

• Feature: added fs.renameSync().

• Feature: added String.prototype.trimEnd() and String.prototype.trimStart().

• Improvement: added memory-sanitizer support.

• Improvement: Unicode case tables updated to version 12.1.

• Improvement: added UTF8 validation for string literals.

• Bugfix: fixed reading files with zero size in fs.readFileSync().

• Bugfix: extended the list of space separators in String.prototype.trim().

• Bugfix: fixed using of uninitialized value in String.prototype.padStart().

• Bugfix: fixed String.prototype.replace() for $0 and $& replacement string.

• Bugfix: fixed String.prototype.replace() for byte strings with regex argument.

• Bugfix: fixed global match in String.prototype.replace() with regexp argument.

• Bugfix: fixed Array.prototype.slice() for primitive types.

• Bugfix: fixed heap-buffer-overflow while importing module.

• Bugfix: fixed UTF-8 character escaping.

• Bugfix: fixed Object.values() and Object.entries() for shared objects.

• Bugfix: fixed uninitialized memory access in String.prototype.match().

• Bugfix: fixed String.prototype.match() for byte strings with regex argument.

• Bugfix: fixed Array.prototype.lastIndexOf() with undefined arguments.

• Bugfix: fixed String.prototype.substring() with empty substring.

• Bugfix: fixed invalid memory access in String.prototype.substring().

• Bugfix: fixed String.fromCharCode() for code points more than 65535 and NaN.

• Bugfix: fixed String.prototype.toLowerCase() and String.prototype.toUpperCase().

• Bugfix: fixed Error() constructor with no arguments.

• Bugfix: fixed in operator for values with accessor descriptors.

• Bugfix: fixed Object.defineProperty() for non-boolean descriptor props.

• Bugfix: fixed Error.prototype.toString() with UTF8 string properties.

• Bugfix: fixed Error.prototype.toString() with non-string values for name and message.

Release Date: 25 June 2019

nginx modules:

• Improvement: getting of special response headers in r.headersOut{}.

• Improvement: working with unknown methods in r.subrequest().

• Improvement: added support for null as a second argument of r.subrequest().

• Bugfix: fixed processing empty output chain in stream body filter.

Core:

• Feature: added runtime support for property getter/setter. Thanks to 洪志道 (Hong Zhi Dao) and Artem S. Povalyukhin.

• Feature: added process global object.

• Feature: writable most of built-in properties and methods.

• Feature: added generic implementation of Array.prototype.fill().

• Bugfix: fixed integer-overflow in String.prototype.concat().

• Bugfix: fixed setting of object properties.

• Bugfix: fixed Array.prototype.toString().

• Bugfix: fixed Date.prototype.toJSON().

• Bugfix: fixed overwriting “constructor” property of built-in prototypes.

• Bugfix: fixed processing of invalid surrogate pairs in strings.

• Bugfix: fixed processing of invalid surrogate pairs in JSON strings.

• Bugfix: fixed heap-buffer-overflow in toUpperCase() and toLowerCase().

• Bugfix: fixed escaping lone closing square brackets in RegExp() constructor.

• Bugfix: fixed handling zero byte characters inside RegExp pattern strings.

• Bugfix: fixed String.prototype.toBytes() for ASCII strings.

• Bugfix: fixed truth value of JSON numbers in JSON.parse().

• Bugfix: fixed use-of-uninitialized-value in njs_string_replace_join().

• Bugfix: fixed parseInt('-0'). Thanks to Artem S. Povalyukhin.

Release Date: 21 May 2019

Core:

• Feature: added support for template literals. Thanks to 洪志道 (Hong Zhi Dao) and Artem S. Povalyukhin.

• Feature: executing command from command line arguments.

• Feature: added support for RegExp groups object (ES9).

• Feature: added block scoped function definitions support.

• Feature: added support for building with GNU Readline library.

• Feature: made configurable length, name, and most of built-in methods.

• Feature: made all constructor properties configurable.

• Bugfix: fixed Regexp.prototype.exec() for Unicode-only regexps.

• Bugfix: fixed njs_vm_value_dump() for empty string values.

• Bugfix: fixed RegExp constructor for regexp value arguments.

• Bugfix: fixed walking over prototypes chain during iteration over an object.

• Bugfix: fixed overflow in Array.prototype.concat().

• Bugfix: fixed length calculation for UTF-8 string with escape characters.

• Bugfix: fixed parsing surrogate pair presents as UTF-16 escape sequences.

• Bugfix: fixed processing the “*” quantifier for String.prototype.match().

• Bugfix: fixed Date() constructor with one argument.

• Bugfix: fixed arrays expansion.

• Bugfix: fixed heap-buffer-overflow in String.prototype.replace().

• Bugfix: fixed heap-buffer-overflow in String.prototype.lastIndexOf().

• Bugfix: fixed regexp literals parsing with escaped backslash and backslash in square brackets.

• Bugfix: fixed regexp literals with lone closing brackets.

• Bugfix: fixed uninitialized-memory-access in Object.defineProperties().

• Bugfix: fixed processing the “*” quantifier for String.prototype.replace().

• Bugfix: fixed Array.prototype.slice() for UTF8-invalid byte strings.

• Bugfix: fixed String.prototype.split() for UTF8-invalid byte strings.

• Bugfix: fixed handling of empty block statements.

Release Date: 16 April 2019

Core:

• Feature: added arrow functions support. Thanks to 洪志道 (Hong Zhi Dao) and Artem S. Povalyukhin.

• Feature: added Object.getOwnPropertyNames(). Thanks to Artem S. Povalyukhin.

• Feature: added Object.getOwnPropertyDescriptors(). Thanks to Artem S. Povalyukhin.

• Feature: making __proto__ accessor descriptor of Object instances mutable.

• Feature: added shebang support in CLI.

• Feature: added support for module mode execution in CLI. In module mode global, this is unavailable.

• Bugfix: fixed editline detection.

• Bugfix: fixed Function.prototype.bind(). Thanks to 洪志道 (Hong Zhi Dao).

• Bugfix: fixed checking of duplication of parameters for functions. Thanks to 洪志道 (Hong Zhi Dao).

• Bugfix: fixed function declaration with the same name as a variable. Thanks to 洪志道 (Hong Zhi Dao).

• Improvement: code related to parsing of objects, variables and functions is refactored. Thanks to 洪志道 (Hong Zhi Dao).

• Improvement: large-value output improved in console.log().

• Improvement: string output improved in console.log() in a compliant way (without escaping and quotes).

• Improvement: using ES6 version of ToInt32(), ToUint32(), ToLength().

Release Date: 26 March 2019

nginx modules:

• Feature: added the js_path directive for http and stream.

• Change: returning undefined value instead of empty strings for absent properties in the following objects: r.args{}, r.headersIn{}, r.headersOut{}, r.variables{}, s.variables{}.

• Change: returning undefined value instead of throwing an exception for r.requestBody when request body is unavailable.

• Bugfix: fixed crash while iterating over r.args{} when a value is absent in a key-value pair.

Core:

• Feature: added initial ES6 modules support. Default import and default export statements are supported. Thanks to 洪志道 (Hong Zhi Dao).

• Feature: added Object.prototype.propertyIsEnumerable().

• Feature: reporting file name and function name in disassembler output.

• Bugfix: fixed function redeclarations in interactive shell. Thanks to 洪志道 (Hong Zhi Dao).

• Bugfix: fixed RegExp literals parsing.

• Bugfix: fixed setting length of UTF8 string in fs.readFileSync().

• Bugfix: fixed nxt_file_dirname() for paths with no dir component.

Release Date: 26 February 2019

nginx modules:

• Change: properties of HTTP request deprecated in 0.2.2 are removed.

• Feature: added support for delete operation in r.headersOut{}.

• Feature: added support for setting nginx variables.

• Bugfix: fixed r.subrequest() for empty body value.

• Improvement: setting special response headers in r.headersOut{}.

Core:

• Feature: added labels support.

• Feature: added setImmediate() method.

• Feature: added support for shorthand property names for Object literals.

• Bugfix: fixed Function.prototype.bind().

• Bugfix: fixed parsing of string literals containing newline characters.

• Bugfix: fixed line number in reporting variable reference errors.

• Bugfix: fixed creation of long UTF8 strings.

• Bugfix: fixed setting special response headers in String.prototype.split() for Unicode strings.

• Bugfix: fixed heap-buffer-overflow in String.prototype.split().

• Bugfix: fixed Array.prototype.fill(). Thanks to Artem S. Povalyukhin.

• Improvement: code related to function invocation is refactored. Thanks to 洪志道 (Hong Zhi Dao).

• Improvement: code related to variables is refactored. Thanks to 洪志道 (Hong Zhi Dao).

• Improvement: parser is refactored. Thanks to 洪志道 (Hong Zhi Dao).

• Improvement: reporting filenames in exceptions.

Release Date: 25 December 2018

Core:

• Feature: rest parameters syntax (destructuring is not supported). Thanks to Alexander Pyshchev.

• Feature: added Object.entries() method.

• Feature: added Object.values() method.

• Improvement: code generator refactored and simplified.

• Bugfix: fixed automatic semicolon insertion.

• Bugfix: fixed assignment expression from compound assignment.

• Bugfix: fixed comparison of Byte and UTF8 strings.

• Bugfix: fixed type of iteration variable in for-in with array values.

• Bugfix: fixed building on platforms without librt.

• Bugfix: miscellaneous bugs have been fixed.

Release Date: 27 November 2018

Core:

• Feature: making built-in prototypes mutable.

• Feature: making global object mutable.

• Feature: console.time() and console.timeEnd() methods.

• Feature: allowing variables and functions to be redeclared.

• Feature: extending Object.defineProperty() spec conformance.

• Feature: introduced quiet mode for CLI to handle simple expressions from stdin.

• Feature: introduced compact form of backtraces to handle stack overflows.

• Improvement: improved wording for various exceptions.

• Bugfix: fixed closure values handling.

• Bugfix: fixed equality operator for various value types.

• Bugfix: fixed handling of “this” keyword in various scopes.

• Bugfix: fixed handling non-object values in Object.keys().

• Bugfix: fixed parsing of throw statement inside if statement.

• Bugfix: fixed parsing of newline after throw statement.

• Bugfix: fixed parsing of statements in if statement without newline.

• Bugfix: fixed size uint32_t overflow in njs_array_expand().

• Bugfix: fixed typeof operator for object_value type.

• Bugfix: miscellaneous bugs have been fixed.

Release Date: 30 October 2018

nginx modules:

• Bugfix: fixed counting pending events in stream module.

• Bugfix: fixed s.off() in stream module.

• Bugfix: fixed processing of data chunks in js_filter in stream module.

• Bugfix: fixed http status and contentType getter in http module.

• Bugfix: fixed http response and parent getters in http module.

Core:

• Feature: arguments object support.

• Feature: non-integer fractions support.

• Improvement: handling non-array values in Array.prototype.slice().

• Bugfix: fixed Array.prototype.length setter

• Bugfix: fixed njs_array_alloc() for length > 2**31.

• Bugfix: handling int overflow in njs_array_alloc() on 32bit archs.

• Bugfix: fixed code size mismatch error message.

• Bugfix: fixed delete operator in a loop.

• Bugfix: fixed Object.getOwnPropertyDescriptor() for complex object (inherited from Array and string values).

• Bugfix: fixed Object.prototype.hasOwnProperty() for non-object properties

• Bugfix: miscellaneous bugs have been fixed.

Release Date: 18 September 2018

nginx modules:

• Change: stream module handlers refactored.

  New methods and properties: s.on(), s.off(), s.allow(), s.done(), s.decline(), s.deny().

  Removed properties of the Stream object: s.OK, s.ABORT, s.AGAIN, s.DECLINED, s.ERROR (replaced with s.allow(), s.done(), s.deny()).

  s.buffer (for reading replaced with data argument of the corresponding callback, for writing use s.send()).

  s.fromUpstream (replaced with a callback for a corresponding event).

  s.eof (replaced with flags.last).

Core:

• Feature: added Function.prototype.length.

• Feature: introduced sandboxing mode.

• Improvement: added exception strings where appropriate.

• Improvement: improved wording for primitive type conversion exception.

• Bugfix: throwing TypeError for attempts to change frozen properties.

• Bugfix: fixed Object.defineProperty() for existing properties.

• Bugfix: respecting the enumerable attribute while iterating by for in.

• Bugfix: respecting writable attribute for property handlers.

• Bugfix: fixed exception handling in arguments of a function.

• Bugfix: fixed Object.prototype.toString for different value types.

• Bugfix: fixed Object() constructor for object types arguments.

• Bugfix: fixed comparison of objects and strings.

• Bugfix: fixed String.slice() for undefined arguments.

• Bugfix: miscellaneous bugs have been fixed.

Release Date: 31 July 2018

nginx modules:

• Bugfix: making a subrequest from a Reply object caused a segmentation fault.

• Bugfix: getting the parent property of the main HTTP Request object caused a segmentation fault.

Core:

• Feature: added the pretty string representation for values.

• Feature: correctly printing floating point numbers.

• Feature: correctly parsing floating point numbers.

• Feature: String.bytesFrom() method (decoding hex, base64, base64url into a byte string).

• Feature: String.padStart() and String.padEnd() methods.

• Feature: added support of binary literals.

• Improvement: added information about illegal token in number parsing.

• Improvement: allowed uppercased O in octal literal values.

• Improvement: added support for multiple arguments in console.log().

• Bugfix: fixed applying call() to methods of external values.

• Bugfix: fixed addition operator applied to an object.

• Bugfix: fixed exception handling in njs_vm_value_to_ext_string().

• Bugfix: fixed Number() with boolean, null and undefined arguments.

• Bugfix: fixed error handling of setting non-numeric Array.length.

• Bugfix: fixed autocompletion for global objects.

• Bugfix: miscellaneous bugs have been fixed.

Release Date: 19 June 2018

nginx modules:

• Change: merged HTTP Response and Reply into HTTP Request. New members of Request:

  • req.status (res.status)

  • req.parent (reply.parent)

  • req.requestBody (req.body)

  • req.responseBody (reply.body)

  • req.headersIn (req.headers)

  • req.headersOut (res.headers)

  • req.sendHeader() (res.sendHeader())

  • req.send() (res.send())

  • req.finish() (res.finish())

  • req.return() (res.return())

  Deprecated members of Request:

  • req.body (use req.requestBody or req.responseBody)

  • req.headers (use req.headersIn or req.headersOut)

  • req.response

  Deprecated members of Response:

  • res.contentLength (use req.headersOut['Content-Length'])

  • res.contentType (use req.headersOut['Content-Type'])

  The deprecated properties will be removed in next releases.

• Feature: HTTP internalRedirect() method.

Core:

• Bugfix: fixed heap-buffer-overflow in crypto.createHmac().

Release Date: 31 May 2018

nginx modules:

• Feature: HTTP request body getter.

• Improvement: moved njs vm to the main configuration.

• Improvement: improved logging for js_set and js_content directives.

• Improvement: setting status code to 500 by default in the js_content handler

• Improvement: added the debug for the returned status code in js_content handler

• Bugfix: fixed error logging in js_include.

Core:

• Feature: added array length setter.

• Improvement: public header cleanup. njscript.h is renamed to njs.h.

• Bugfix: fixed crypto update() method after digest() is called.

• Bugfix: fixed crypto.createHmac() for keys with size <= alg size and > 64.

• Bugfix: fixed JSON.stringify() for arrays with empty cells.

• Bugfix: fixed exception type for unsupported types in JSON.stringify().

• Bugfix: fixed handling of undefined arguments of functions.

• Bugfix: fixed handling of missing arg of Object.getOwnPropertyDescriptor().

• Bugfix: fixed handling of properties in Object.getOwnPropertyDescriptor().

• Bugfix: fixed the writeable flag of Array.length property.

• Bugfix: fixed return value type of clearTimeout().

• Bugfix: fixed njs_vm_external_bind().

• Bugfix: miscellaneous bugs have been fixed.

Release Date: 03 April 2018

• Feature: reporting njs version by CLI.

• Feature: textual description for type converting exceptions.

• Feature: setTimeout() and clearTimeout() methods.

• Feature: Byte string to hex, base64, base64url encodings.

• Feature: Node.js style Crypto methods.

• Feature: HTTP and stream warn() and error() methods.

• Feature: HTTP subrequest() method.

• Feature: HTTP return() method.

• Bugfix: miscellaneous bugs have been fixed in the core and interactive shell.

Release Date: 20 November 2017

• Feature: Error, EvalError, InternalError, RangeError, ReferenceError, SyntaxError, TypeError, URIError objects.

• Feature: octal literals support.

• Feature: Node.js style File system access methods: fs.readFile(), fs.readFileSync(), fs.appendFile(), fs.appendFileSync(), fs.writeFile(), fs.writeFileSync().

• Feature: nginx modules print backtrace on exception.

• Bugfix: miscellaneous bugs have been fixed.

Release Date: 09 October 2017

• Feature: JSON object.

• Feature: object level completions in interactive shell.

• Feature: various configure improvements.

• Bugfix: miscellaneous bugs have been fixed in the core and interactive shell.

Release Date: 31 August 2017

• Feature: console.log() and console.help() methods in interactive shell.

• Feature: interactive shell prints backtrace on exception.

• Feature: interactive shell by default if libedit is available.

• Bugfix: processing of large files from stdin in command line mode.

• Bugfix: improved editline detection.

Release Date: 08 August 2017

• Feature: Interactive shell.

• Bugfix: in Object.isSealed().

Release Date: 27 June 2017

• Feature: Object.keys(), Object.prototype.hasOwnProperty() methods.

• Feature: Object.defineProperty(), Object.defineProperties(), Object.getOwnPropertyDescriptor() methods.

• Feature: Object.getPrototypeOf(), Object.prototype.isPrototypeOf() methods.

• Feature: Object.preventExtensions(), Object.isExtensible(), Object.freeze(), Object.isFrozen(), Object.seal(), Object.isSealed() methods.

• Feature: scientific notation (3.35e10) literals support.

• Feature: hexadecimal (0x1123) literals support.

• Bugfix: processing of large array indexes.

• Bugfix: in parseInt() and Date.parse().

Release Date: 04 April 2017

• Feature: nested functions and function closures.

• Feature: Array.of(), Array.prototype.fill(), Array.prototype.find(), Array.prototype.findIndex() methods.

• Bugfix: miscellaneous bugs and segmentation faults have been fixed.

Release Date: 01 February 2017

• Bugfix: global variables were not initialized when njs was used in nginx.

Release Date: 24 January 2017

• Change: the strict mode is enforced, variables must be explicitly declared.

• Feature: for and for-in loops support variable declaration.

• Bugfix: global and function scopes have been fixed.

• Bugfix: now for-in loop does not discard the last value of property variable.

• Bugfix: miscellaneous bugs and segmentation faults have been fixed.

Release Date: 27 December 2016

• Change: the js_include directive has been disabled at server and location levels.

• Feature: exponentiation operators.

• Bugfix: miscellaneous bugs and segmentation faults have been fixed.

Release Date: 13 December 2016

• Change: the js_set directive has been disabled at server and location levels.

• Feature: ES6 Math methods.

• Bugfix: miscellaneous bugs and segmentation faults have been fixed.