CHANGES

Changes with njs 0.8.0                                        6 Jul 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 HTTP module.

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

    *) Feature: introduced global nginx properties.
        ngx.build - an optional nginx build name, corresponds to
        --build=name argument of configure script, by default is "".
        ngx.conf_file_path - the file path to current nginx configuration
            file.
        ngx.error_log_path - the file path to current error log file.
        ngx.prefix - the directory that keeps server files.
        ngx.version - the nginx version as a string, for example: "1.25.0".
        ngx.version_number - the nginx version as a number, for example:
            1025000.
        ngx.worker_id - corresponds to an nginx internal worker id.
           The value is between 0 and worker_processes - 1.

    *) Feature: introduced js_shared_dict_zone directive.
        The directive allows to declare a dictionary that is shared among the
        working processes.

    *) 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 HTTP module.

    *) Bugfix: fixed setting of Location header in HTTP module.

    Core:

    *) Change: native methods are provided with retval argument.
       This change breaks compatibility with C extension for njs
       requiring to modify 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 Array.from(), Array.prototype.toSorted(),
        Array.prototype.toSpliced(), Array.prototype.toReversed().

    *) Feature: added %TypedArray%.prototype.toSorted(),
        %TypedArray%.prototype.toSpliced(),
        %TypedArray%.prototype.toReversed().

    *) Feature: added CryptoKey properties in WebCrypto.
        The following properties for CryptoKey were added:
        algorithm, extractable, type, usages.

    *) Bugfix: fixed retval of crypto.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                                       10 Apr 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                                        9 Mar 2023
    nginx modules:

    *) Bugfix: added missed linking with libxml2 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 XML document
       due to security implications. The issue was introduced
       in 0.7.10. When XML_PARSE_DTDVALID is enabled, libxml2 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                                        7 Feb 2023
    nginx modules:

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

    *) Bugfix: fixed nginx logger callback for calls in 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. 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: fixed Object.values() and Object.entries() with external
       objects.

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

Changes with njs 0.7.9                                        17 Nov 2022
    nginx modules:

    *) Bugfix: fixed Fetch Response prototype reinitialization.
       When at least one js_import directive was declared in both HTTP
       and Stream, 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 evaluation.

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

Changes with njs 0.7.8                                        25 Oct 2022

    nginx modules:

    *) Feature: added js_preload_object directive.

    *) Feature: added ngx.conf_prefix property.

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

    *) Feature: added support for HEAD method in Fetch API.

    *) Improvement: improved async callback support for s.send()
       in stream 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                                        30 Aug 2022

    nginx modules:

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

       HTTP: js_import, js_path, js_set and js_var are allowed
       in server and location contexts. js_content, js_body_filter
       and js_header_filter are allowed in 'if' context.

       Stream: js_import, js_path, js_set and js_var are allowed
       in server context.

    *) Feature: added r.internal property.

    *) Bugfix: fixed reading response body in fetch API.

    *) Bugfix: fixed "js_fetch_timeout" in stream module.

    *) 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                                        19 Jul 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 btoa() and atob() from WHATWG spec.

    *) Bugfix: fixed large non-decimal literals.

    *) Bugfix: fixed unicode argument trimming in parseInt().

    *) Bugfix: fixed break instruction in a try-catch block.

    *) Bugfix: fixed async function declaration in CLI.

Changes with njs 0.7.5                                        21 Jun 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                                        24 May 2022

    nginx modules:

    *) Feature: added extended directive to configure Fetch API.
       The following directives were added: "js_fetch_timeout",
       "js_fetch_verify", "js_fetch_buffer_size",
       "js_fetch_max_response_buffer_size".

    *) 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 Array.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
       the specs.

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

Changes with njs 0.7.3                                        12 Apr 2022

    Core:

    *) Feature: added support of module resolution callback.
       This feature allows a 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                                        25 Jan 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                                        28 Dec 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:

    *) Feature: extended "fs" module. Added stat(), fstat()
       and friends.

    *) Change: default RegExp engine for CLI is switched
       to PCRE2.

    *) 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                                        19 Oct 2021

    nginx modules:

    *) Feature: added HTTPS support for Fetch API.

    *) Feature: added setReturnValue() method.

    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                                        31 Aug 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                                        29 Jun 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                                        15 Jun 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                                        30 Mar 2021

    nginx modules:

    *) Feature: added the "js_var" directive.

Changes with njs 0.5.2                                        09 Mar 2021

    nginx modules:

    *) Feature: added the "js_body_filter" directive.

    *) Feature: introduced the "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                                        16 Feb 2021

    nginx modules:

    *) Feature: introduced ngx.fetch() method implementing Fetch API.
       The following init options are supported:
       body, headers, buffer_size (nginx specific),
       max_response_body_size (nginx specific), method.

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

       The following properties and methods of Header object are
       implemented: get(), getAll(), has().

       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.

Changes with njs 0.5.0                                         01 Dec 2020

    nginx modules:

    *) Feature: introduced global "ngx" object.
       The following methods were added:
         ngx.log(level, msg)

       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 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().

Changes with njs 0.4.4                                           29 Sep 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] when the
       replacement value is a function.

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

Changes with njs 0.4.3                                           11 Aug 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 TextEncoder/TextDecoder 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                                           07 Jul 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.
       Thanks to Artem S. Povalyukhin.

    *) 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 parsing of flags for regexp literals.

    *) Bugfix: fixed index generation for global objects in generator.

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

    *) 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                                           19 May 2020

    *) Feature: added support for multi-value headers in r.headersIn.

    *) Feature: introduced raw headers API.

    *) Feature: added TypedScript API description.

    Core:

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

Changes with njs 0.4.0                                           23 Apr 2020

    nginx modules:

    *) Feature: added js_import directive.

    *) Feature: added support for multi-value headers in r.headersOut.

    *) Improvement: iteration over r.headersOut with special headers.

    *) Improvement: iteration over r.headersOut with duplicates.

    *) Change: r.responseBody property handler now returns "undefined"
       instead of throwing an exception if 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                                           03 Mar 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                                           21 Jan 2020

    nginx modules:

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

    *) Change: r.parent property handler now returns "undefined"
      instead of throwing exception if 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.
       Thanks to Valentin Bartenev.

    *) 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                                           19 Nov 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.