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Celebrating 20 years of nginx! Read about our journey and milestones in the latest blog.

Changes

Changes with njs 0.8.8

Release Date: 10 December 2024

nginx modules:

• Feature: implemented shared dictionary for the QuickJS engine.

• Improvement: is refactored.

• Bugfix: fixed limit rated output.

•  Bugfix: optimized use of SSL contexts for the directive.

Core:

• Feature: implemented process object for the QuickJS engine.

• Feature: implemented the process.kill() method.

• Bugfix: fixed XML tests with 2.13 and later.

•  Bugfix: fixed promise resolving when Promise is inherited.

• Bugfix: fixed absolute scope in cloned VMs.

Changes with njs 0.8.7

Release Date: 22 October 2024

nginx modules:

• Bugfix: eliminated unnecessary VM creation. Previously, njs consumed memory proportionally to the number of nginx locations. The issue was introduced in 0.8.6.

•  Improvement: added strict syntax validation for .

•  Improvement: improved error messages for module loading failures.

Core:

• Feature: implemented fs.readlinkSync().

•  Improvement: implemented lazy stack symbolization.

• Bugfix: fixed heap-buffer-overflow in Buffer.prototype.indexOf(). The issue was introduced in 0.8.6.

• Bugfix: fixed Buffer.prototype.lastIndexOf() when `from` is provided.

Changes with njs 0.8.6

Release Date: 02 October 2024

nginx modules:

• Feature: introduced the QuickJS engine.

• Feature: added optional nocache flag for the js_set directive for and . Thanks to Thomas P.

• Feature: exposed capture group variables in the HTTP module. Thanks to Thomas P.

Core:

• Feature: added Buffer module for the QuickJS engine.

•  Bugfix: fixed handling of empty labelled statement in a function.

• Bugfix: fixed Function constructor handling when called without arguments.

• Bugfix: fixed Buffer.prototype.writeInt8() and friends.

• Bugfix: fixed Buffer.prototype.writeFloat() and friends.

• Bugfix: fixed Buffer.prototype.lastIndexOf().

• Bugfix: fixed Buffer.prototype.write().

•  Bugfix: fixed maybe-uninitialized warnings in error creation.

• Bugfix: fixed ctx.codepoint initialization in UTF-8 decoding.

• Bugfix: fixed length initialization in Array.prototype.pop().

• Bugfix: fixed handling of encode arg in fs.readdir() and fs.realpath().

Changes with njs 0.8.5

Release Date: 25 June 2024

nginx modules:

•  Change: bytes invalid in UTF-8 encoding are converted into the replacement character in:

  • r.variables.var, r.requestText, r.responseText, s.variables.var,

  • the data argument of the s.on() callback with upload or download event types,

  • the data argument of the directive.

  When working with binary data, use:

  • r.rawVariables.var, r.requestBuffer, r.responseBuffer, s.rawVariables.var,

  • the upstream or downstream event type for s.on(),

  • buffer_type=buffer for .

• Feature: added timeout argument for add(), set(), and incr() methods of a shared dictionary.

•  Bugfix: fixed checking for duplicate variables.

• Bugfix: fixed request Host header when the port is non-standard.

• Bugfix: fixed handling of a zero-length request body in ngx.fetch() and r.subrequest().

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

• Bugfix: fixed r.subrequest() error handling.

Core:

• Feature: added zlib module for QuickJS engine.

• Bugfix: fixed zlib.inflate().

• Bugfix: fixed String.prototype.replaceAll() with a zero-length argument.

• Bugfix: fixed retval handling after an exception in Array.prototype.toSpliced(), Array.prototype.toReversed(), Array.prototype.toSorted().

• Bugfix: fixed RegExp.prototype[@@replace]() with replacements containing $', $` and strings with Unicode characters.

• Bugfix: fixed a one-byte overread in decodeURI() and decodeURIComponent().

• Bugfix: fixed tracking of argument scope.

• Bugfix: fixed integer overflow in Date.parse().

Changes with njs 0.8.4

Release Date: 16 April 2024

nginx modules:

• Feature: the Server header for outgoing header can be set.

• Improvement: validating URI and args arguments in r.subrequest().

• Improvement: checking for duplicate variables.

• Bugfix: fixed clear() method of a shared dictionary without a timeout introduced in 0.8.3.

• Bugfix: fixed r.send() method of a shared dictionary without a timeout with Buffer argument.

Core:

• Feature: added QuickJS engine support in CLI.

• Bugfix: fixed atob() with non-padded base64 strings.

Changes with njs 0.8.3

Release Date: 07 February 2024

nginx modules:

• Bugfix: fixed Headers.set().

• Bugfix: fixed with Buffer values.

• Bugfix: fixed clear() method of a shared dictionary when a timeout is not specified.

• Bugfix: fixed statistics when is enabled.

Core:

• Bugfix: fixed building with 2.12 and later.

• Bugfix: fixed Date constructor for overflows and with NaN values.

• Bugfix: fixed underflow in querystring.parse().

• Bugfix: fixed potential buffer overread in String.prototype.match().

• Bugfix: fixed parsing of for-in loops.

•  Bugfix: fixed parsing of hexadecimal, octal, and binary literals with no digits.

Changes with njs 0.8.2

Release Date: 24 October 2023

nginx modules:

• Feature: introduced console object. The following methods were introduced: error(), info(), log(), time(), timeEnd(), warn().

• Bugfix: fixed HEAD response handling with large Content-Length in Fetch API.

• Bugfix: fixed items() method for a shared dictionary.

• Bugfix: fixed delete() method for a shared dictionary.

Core:

• Feature: extended fs module. Added fs.existsSync().

• Bugfix: fixed xml module. Broken XML exception handling in xml.parse() method was fixed.

• Bugfix: fixed Regexp.prototype.exec() with global regexp and Unicode input.

Changes with njs 0.8.1

Release Date: 12 September 2023

nginx modules:

• Feature: introduced the js_periodic directive for and that allows specifying a JS handler to run at regular intervals.

• Feature: implemented items() method of a shared dictionary. The method returns all the non-expired key-value pairs.

• Bugfix: fixed size() and keys() methods of a shared dictionary.

• Bugfix: fixed erroneous exception in r.internalRedirect() introduced in 0.8.0.

Core:

• Bugfix: fixed incorrect order of keys in Object.getOwnPropertyNames().

Changes with njs 0.8.0

Release Date: 06 July 2023

nginx modules:

• Change: removed special treatment of forbidden headers in Fetch API introduced in 0.7.10.

• Change: removed deprecated since 0.5.0 r.requestBody and r.responseBody in module.

• Change: throwing an exception in r.internalRedirect() while filtering in module.

• Feature: introduced more global nginx properties: ngx.build, ngx.conf_file_path, ngx.error_log_path, ngx.prefix, ngx.version, ngx.version_number, and ngx.worker_id.

• Feature: introduced the js_shared_dict_zone directive for and that allows declaring a dictionary shared between worker processes.

• Feature: introduced global nginx.shared methods and properties for working with shared dictionaries.

•  Improvement: added compile-time options to disable njs modules. For example, to disable libxslt-related code:

  NJS_LIBXSLT=NO ./configure  .. --add-module=/path/to/njs/module
  

• Bugfix: fixed r.status setter when filtering in module.

•  Bugfix: fixed setting of Location header in module.

Core:

• Change: native methods are provided with retval argument. This change breaks compatibility with C extension for njs requiring the modification of the code.

• Change: non-compliant deprecated String methods were removed. The following methods were removed: String.bytesFrom(), String.prototype.fromBytes(), String.prototype.fromUTF8(), String.prototype.toBytes(), String.prototype.toUTF8(), String.prototype.toString(encoding).

•  Change: removed support for building with GNU readline.

• Feature: added ES13-compliant Array methods: Array.from(), Array.prototype.toSorted(), Array.prototype.toSpliced(), Array.prototype.toReversed().

• Feature: added ES13-compliant TypedArray methods: %TypedArray%.prototype.toSorted(), %TypedArray%.prototype.toSpliced(), %TypedArray%.prototype.toReversed().

• Feature: added CryptoKey properties in WebCrypto API. The following properties were added: algorithm, extractable, type, usages.

• Bugfix: fixed retval of сrypto.getRandomValues().

•  Bugfix: fixed evaluation of computed property names with function expressions.

•  Bugfix: fixed implicit name for a function expression declared in arrays.

• Bugfix: fixed parsing of for-in loops.

• Bugfix: fixed Date.parse() with ISO-8601 format and UTC time offset.

Changes with njs 0.7.12

Release Date: 10 April 2023

nginx modules:

• Bugfix: fixed Headers() constructor in Fetch API.

Core:

• Feature: added Hash.copy() method in crypto module.

• Feature: added zlib module.

• Improvement: added support for export {name as default} statement.

• Bugfix: fixed Number constructor according to the spec.

Changes with njs 0.7.11

Release Date: 09 March 2023

nginx modules:

• Bugfix: added missed linking with for the dynamic module. The bug was introduced in 0.7.10.

Core:

• Feature: added XMLNode API to modify XML documents.

• Change: removed XML_PARSE_DTDVALID during parsing of an XML document due to security implications. The issue was introduced in 0.7.10. When XML_PARSE_DTDVALID is enabled, parses and executes external entities present inside an XML document.

• Bugfix: fixed the detection of await in arguments.

• Bugfix: fixed Error() instance dumping when “name” prop is not primitive.

• Bugfix: fixed array instance with a getter property dumping.

• Bugfix: fixed njs_object_property() with NJS_WHITEOUT properties.

• Bugfix: fixed func instance dumping with “name” as getter.

•  Bugfix: fixed attaching of a stack to an error object.

• Bugfix: fixed String.prototype.replace() with replacement containing “$'”, “$`”.

Changes with njs 0.7.10

Release Date: 07 February 2023

nginx modules:

• Feature: added Request, Response, and Headers ctors in Fetch API.

•  Bugfix: fixed nginx logger callback for calls in the master process.

Core:

• Feature: added signal support in CLI.

• Feature: added xml module for working with XML documents.

• Feature: extended support for symmetric and asymmetric keys in WebCrypto. Most notably JWK format for importKey() was added.

• Feature: extended support for symmetric and asymmetric keys in WebCrypto API. Most notably JWK format for importKey() was added. generateKey() and exportKey() were also implemented.

• Feature: added String.prototype.replaceAll().

• Bugfix: fixed for(expr1; conditional syntax error handling.

• Bugfix: Object.values() and Object.entries() with external objects.

• Bugfix: fixed RegExp.prototype[@@replace]().

Changes with njs 0.7.9

Release Date: 17 November 2022

nginx modules:

• Bugfix: fixed Fetch Response prototype reinitialization. When at least one js_import directive was declared in both and , ngx.fetch() returned inapproriate response in Stream. The bug was introduced in 0.7.7.

Core:

• Bugfix: fixed String.prototype.replace(re) if re.exec() returns non-flat array.

• Bugfix: fixed Array.prototype.fill() when start object changes this.

• Bugfix: fixed description for fs.mkdir() and fs.rmdir() methods.

• Bugfix: fixed %TypedArray%.prototype.set(s) when s element changes this.

• Bugfix: fixed Array.prototype.splice(s,d) when d resizes this during eval.

• Bugfix: fixed for-in loop with left and right hand side expressions.

Changes with njs 0.7.8

Release Date: 25 October 2022

nginx modules:

• Feature: added directive.

• Feature: added ngx.conf_prefix property.

• Feature: added s.sendUpstream() and s.sendDownstream() in module.

• Feature: added support for HEAD method in Fetch API.

• Improvement: improved async callback support for s.send() in module.

Core:

• Feature: added name instance property for a function object.

• Feature: added njs.memoryStats object.

• Bugfix: fixed String.prototype.trimEnd() with unicode string.

• Bugfix: fixed Object.freeze() with fast arrays.

• Bugfix: fixed Object.defineProperty() with fast arrays.

• Bugfix: fixed async token as a property name of an object.

•  Bugfix: fixed property set instruction when key modifies base binding.

• Bugfix: fixed complex assignments.

•  Bugfix: fixed handling of unhandled promise rejection.

•  Bugfix: fixed process.env when duplicate environ variables are present.

•  Bugfix: fixed double declaration detection in modules.

•  Bugfix: fixed bound function calls according to the spec.

• Bugfix: fixed break label for if statement.

• Bugfix: fixed labeled empty statements.

Changes with njs 0.7.7

Release Date: 30 August 2022

nginx modules:

•  Feature: the number of nginx configuration contexts where js directives can be specified is extended.

  • HTTP: the , , , and directives are allowed in server and location contexts. The , and are allowed in context.

  • Stream: the , , , and are allowed in server context.

• Feature: added r.internal property.

• Bugfix: fixed reading response body in Fetch API.

• Bugfix: fixed in .

• Bugfix: fixed socket leak with 0 fetch timeout.

Core:

• Feature: extended fs module. Added fs.openSync(), fs.promises.open(), fs.fstatSync(), fs.readSync(), fs.writeSync().

  The following properties of FileHandle are implemented: fd, read(), stat(), write(), close().

• Bugfix: fixed parseInt(), parseFloat(), Symbol.for() with no arguments.

Changes with njs 0.7.6

Release Date: 19 July 2022

nginx modules:

• Feature: improved r.args{} object. Added support for multiple arguments with the same key. Added case sensitivity for keys. Keys and values are percent-decoded now.

• Bugfix: fixed r.headersOut{} setter for special headers.

Core:

• Feature: added Symbol.for() and Symbol.keyfor().

• Feature: added atob() and btoa() from spec.

• Bugfix: fixed large non-decimal literals.

• Bugfix: fixed Unicode argument trimming in parseInt().

• Bugfix: fixed break instruction in try-catch block.

• Bugfix: fixed async function declaration in CLI.

Changes with njs 0.7.5

Release Date: 21 June 2022

nginx modules:

•  Change: adapting to changes in nginx header structures.

• Bugfix: fixed r.headersOut{} special getters when value is absent.

• Change: returning undefined value instead of an empty string for Content-Type when the header is absent.

Core:

•  Bugfix: fixed catching of the exception thrown from an awaited function.

• Bugfix: fixed function value initialization.

• Bugfix: fixed interpreter when await fails.

•  Bugfix: fixed typed-array constructor when source array is changed while iterating.

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

•  Bugfix: fixed template literal from producing byte-strings.

•  Bugfix: fixed array iterator with sparse arrays.

•  Bugfix: fixed memory free while converting a flat array to a slow array.

• Bugfix: properly handling NJS_DECLINE in promise native functions.

• Bugfix: fixed working with an array-like object in Promise.all() and friends.

Changes with njs 0.7.4

Release Date: 24 May 2022

nginx modules:

• Feature: added extended directives for configuring Fetch API. The following directives were added for and :

  • ,

  • ,

  • ,

  • .

• Change: r.internalRedirect() now accepts escaped URIs.

• Bugfix: fixed Response parsing with more than 8 headers in Fetch API.

Core:

• Feature: added njs.version_number property.

• Feature: added compatibility with BoringSSL for WebCrypto API.

• Bugfix: fixed Array.prototype.sort() when arr size is changed in a comparator.

• Bugfix: fixed Array.prototype.slice() with slow this argument.

• Bugfix: fixed aggregation methods of Promise ctor with array-like object.

• Bugfix: fixed String.prototype.lastIndexOf() with Unicode string as this.

• Bugfix: fixed JSON.parse() when reviver function is provided.

• Bugfix: fixed Object.defineProperty() when a recursive descriptor is provided.

• Bugfix: fixed Array.prototype.fill() for typed-arrays.

•  Bugfix: making function expression binding immutable according to the specs.

• Bugfix: fixed redefinition of special props in Object.defineProperty().

Changes with njs 0.7.3

Release Date: 12 April 2022

Core:

•  Feature: added support of module resolution callback. This feature allows the host environment to control how imported modules are loaded.

•  Bugfix: fixed backtraces while traversing imported user modules.

• Bugfix: fixed Array.prototype.concat() when this is a slow array.

•  Bugfix: fixed frame allocation from an awaited frame.

•  Bugfix: fixed allocation of large array literals.

• Bugfix: fixed interpreter when toString conversion fails.

Changes with njs 0.7.2

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.

Changes with njs 0.7.1

Release Date: 28 December 2021

nginx modules:

• Change: the 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().

Changes with njs 0.7.0

Release Date: 19 October 2021

nginx modules:

• Feature: Added 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.

Changes with njs 0.6.2

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.

Changes with njs 0.6.1

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.

Changes with njs 0.6.0

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.

Changes with njs 0.5.3

Release Date: 30 March 2021

nginx modules:

• Feature: added the js_var directive for and .

Changes with njs 0.5.2

Release Date: 09 March 2021

nginx modules:

• Feature: added the 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.

Changes with njs 0.5.1

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 // scheme is supported, redirects are not handled.

  In collaboration with 洪志道 (Hong Zhi Dao).

• Feature: added the directive.

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

Core:

• Bugfix: fixed safe mode bypass in Function constructor.

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

Changes with njs 0.5.0

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 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().

Changes with njs 0.4.4

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.

Changes with njs 0.4.3

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 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.

Changes with njs 0.4.2

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.

Changes with njs 0.4.1

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 API description.

Core:

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

Changes with njs 0.4.0

Release Date: 23 April 2020

nginx modules:

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

• Feature: added js_import directive for and .

• 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.

Changes with njs 0.3.9

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.

Changes with njs 0.3.8

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).

Changes with njs 0.3.7

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.

Changes with njs 0.3.6

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.

Changes with njs 0.3.5

Release Date: 15 August 2019

Core:

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

• Bugfix: fixed [[SetPrototypeOf]].

Changes with njs 0.3.4

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.

Changes with njs 0.3.3

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.

Changes with njs 0.3.2

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.

Changes with njs 0.3.1

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().

Changes with njs 0.3.0

Release Date: 26 March 2019

nginx modules:

• Feature: added the js_path directive for and .

• 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.

Changes with njs 0.2.8

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.

Changes with njs 0.2.7

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.

Changes with njs 0.2.6

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.

Changes with njs 0.2.5

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.

Changes with njs 0.2.4

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.

Changes with njs 0.2.3

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.

Changes with njs 0.2.2

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().

Changes with njs 0.2.1

Release Date: 31 May 2018

nginx modules:

• Feature: HTTP request body getter.

• Improvement: moved njs vm to the main configuration.

•  Improvement: improved logging for and directives.

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

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

• Bugfix: fixed error logging in .

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.

Changes with njs 0.2.0

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: 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.

Changes with njs 0.1.15

Release Date: 20 November 2017

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

• Feature: octal literals support.

• Feature: 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.

Changes with njs 0.1.14

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.

Changes with njs 0.1.13

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.

Changes with njs 0.1.12

Release Date: 08 August 2017

• Feature: Interactive shell.

• Bugfix: in Object.isSealed().

Changes with njs 0.1.11

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().

Changes with njs 0.1.10

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.

Changes with njs 0.1.9

Release Date: 01 February 2017

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

Changes with njs 0.1.8

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.

Changes with njs 0.1.7

Release Date: 27 December 2016

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

• Feature: exponentiation operators.

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

Changes with njs 0.1.6

Release Date: 13 December 2016

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

• Feature: ES6 Math methods.

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