Version history of Node.js server for offline export of Plotly.js graphs

(Note: This changelog focuses on the major changes between the different versions. Therefore, it may not contain all changes. Especially smaller fixes or improvements may be omitted.)

As a general rule the version tries to follow the Semantic Versioning scheme. Since Plotly.js is the main dependency of this application, major version changes in Plotly.js will also trigger a major version change in this application.

Version 7.?.? (2026-03-??)

[maintenance] Update dependency @csstools/css-calc to 3.2.0.
[maintenance] Update dependency @csstools/css-color-parser to 4.1.0.
[maintenance] Update dependency @csstools/css-syntax-patches-for-csstree to 1.1.3.
[maintenance] Update dependency css-tree to 3.2.1.
[maintenance] Update dependency @exodus/bytes to 1.15.0.
[maintenance] Update dependency lru-cache to 11.3.5.
[maintenance] Update dependency mdn-data to 2.27.1.
[maintenance] Update dependencies tldts + tldts-core to 7.0.28.
[maintenance] Update dependency tough-cookie to 6.0.1.
[maintenance] Update dependency ws to 8.20.0.

Version 7.0.3 (2026-02-24)

[maintenance] Update dependency @acemir/cssom to 0.9.31.
[maintenance] Update dependency @asamuzakjp/css-color to 4.1.2.
[maintenance] Update dependency @asamuzakjp/dom-selector to 6.8.1.
[maintenance] Update dependency cssstyle to 5.3.5.
[maintenance] Update dependency @csstools/color-helpers to 6.0.2.
[maintenance] Update dependency @csstools/color-calc to 3.1.1.
[maintenance] Update dependency @csstools/css-color-parser to 4.0.2.
[maintenance] Update dependency @csstools/css-parser-algorithms to 4.0.0.
[maintenance] Update dependency @csstools/css-syntax-patches-for-csstree to 1.0.28.
[maintenance] Update dependency @csstools/css-tokenizer to 4.0.0.
[maintenance] Update dependency data-urls to 6.0.1.
[maintenance] Update dependency @exodus/bytes to 1.14.1.
[maintenance] Update dependency html-encoding-sniffer to 6.0.0.
[maintenance] Update dependency jsdom to 27.4.0.
[maintenance] Update dependency lru-cache to 11.2.6.
[maintenance] Update dependencies tldts + tldts-core to 7.0.23.
[maintenance] Update dependency webidl-conversions to 8.0.1.
[maintenance] Update dependency ws to 8.19.0.

Version 7.0.2 (2025-10-23)

[maintenance] Update dependency @asamuzakjp/dom-selector to 6.7.2.
[maintenance] Update dependency jsdom to 27.0.1.
[maintenance] Update dependency parse5 to 8.0.0.

Version 7.0.1 (2025-10-15)

[maintenance] Update dependency @asamuzakjp/dom-selector to 6.6.2.
[maintenance] Update dependencies tldts + tldts-core to 7.0.17.

Version 7.0.0 (2025-10-01)

[breaking change] Support for Node.js 19 and older versions is dropped. The minimum required version is now Node.js 20. Node.js versions before 20 have reached their end of life, so users of those versions should upgrade to newer versions anyway.
[maintenance] Update dependency jsdom to 27.0.0.

As part of the jsdom update, cssstyle is updated to 5.3.1 and data-urls is updated to 6.0.0.
[maintenance] Update dependency @asamuzakjp/css-color to 4.0.5.
[maintenance] Update dependency @asamuzakjp/dom-selector to 6.5.7.
[maintenance] Update dependency lru-cache to 11.2.2.
[maintenance] Update dependencies tldts + tldts-core to 7.0.16.
[maintenance] Update dependency tr46 to 6.0.0.
[maintenance] Update dependency whatwg-url to 15.1.0.

Version 6.0.10 (2025-09-16)

[maintenance] Update dependency @csstools/color-helpers to 5.1.0.
[maintenance] Update dependency @csstools/css-color-parser to 3.1.0.
[maintenance] Update dependency debug to 4.4.3.
[maintenance] Update dependency nwsapi to 2.2.22.

Version 6.0.9 (2025-07-26)

[maintenance] The version of Plotly.js is bumped from 3.0.2 to 3.0.3. The new version contains some minor changes. For details on those see the changelog of Plotly.js.
[maintenance] Update dependency cssstyle to 4.6.0.
[maintenance] Update dependency nwsapi to 2.2.21.

Version 6.0.8 (2025-07-26)

[maintenance] The version of Plotly.js is bumped from 3.0.1 to 3.0.2. The new version contains some fixes. For details on those see the changelog of Plotly.js.
[maintenance] Update dependency agent-base to 7.1.4.
[maintenance] Update dependency @asamuzakjp/css-color to 3.2.0.
[maintenance] Update dependency @csstools/css-calc to 2.1.4.
[maintenance] Update dependency @csstools/css-color-parser to 3.0.10.
[maintenance] Update dependency @csstools/css-tokenizer to 3.0.4.
[maintenance] Update dependency @csstools/css-parser-algorithms to 3.0.5.
[maintenance] Update dependency debug to 4.4.1.
[maintenance] Update dependency decimal.js to 10.6.0.
[maintenance] Update dependency entities to 6.0.1.
[maintenance] Update dependency ws to 8.18.3.

Version 6.0.7 (2025-04-26)

[maintenance] Update dependency @asamuzakjp/css-color to 3.1.4.
[maintenance] Update dependency cssstyle to 4.3.1.
[maintenance] Update dependency @csstools/css-calc to 2.1.3.
[maintenance] Update dependency @csstools/css-color-parser to 3.0.9.
[maintenance] Update dependency entities to 6.0.0.
[maintenance] Update dependency jsdom to 26.1.0.
[maintenance] Update dependency parse5 to 7.3.0.
[maintenance] Update dependencies tldts + tldts-core to 6.1.86.
[maintenance] Update dependency tr46 to 5.1.1.

Version 6.0.6 (2025-04-06)

[maintenance] Update dependency nwsapi to 2.2.20.
[maintenance] Update dependencies tldts + tldts-core to 6.1.85.

Version 6.0.5 (2025-03-17)

[maintenance] Update dependency @asamuzakjp/css-color to 3.1.1.
[maintenance] Update dependency cssstyle to 4.3.0.
[maintenance] Update dependency nwsapi to 2.2.18.
[maintenance] Update dependencies tldts + tldts-core to 6.1.84.
[maintenance] Update dependency tr46 to 5.1.0.
[maintenance] Update dependency whatwg-url to 14.2.0.

Version 6.0.4 (2025-03-01)

[maintenance] Update dependencies tldts + tldts-core to 6.1.79.
[maintenance] Update dependency tough-cookie to 5.1.2.

Version 6.0.3 (2025-02-23)

[maintenance] The version of Plotly.js is bumped from 3.0.0 to 3.0.1. The new version contains some fixes. For details on those see the changelog of Plotly.js.
[maintenance] Update dependency @csstools/color-helpers to 5.0.2.
[maintenance] Update dependency @csstools/css-calc to 2.1.2.
[maintenance] Update dependency @csstools/css-color-parser to 3.0.8.
[maintenance] Update dependencies tldts + tldts-core to 6.1.78.
[maintenance] Update dependency ws to 8.18.1.

Version 6.0.2 (2025-02-17)

[maintenance] Update dependency whatwg-url to 14.1.1.

Version 6.0.1 (2025-02-10)

[maintenance] Update dependencies tldts + tldts-core to 6.1.77.
[maintenance] Update dependency tough-cookie to 5.1.1.

Version 6.0.0 (2025-02-05)

[breaking change] + [maintenance] The version of Plotly.js is bumped from 2.35.3 to 3.0.0. The new version contains some new features and fixes. It also contains some breaking changes, for example some deprecated features have been removed. For details on those see the changelog of Plotly.js.
[maintenance] Update dependencies tldts + tldts-core to 6.1.76.

Version 5.9.7 (2025-01-30)

[maintenance] Update dependency decimal.js to 10.5.0.
[maintenance] Update dependencies tldts + tldts-core to 6.1.75.

Version 5.9.6 (2025-01-23)

[maintenance] Update dependency jsdom to 26.0.0.

As part of the jsdom update, cssstyle is updated to 4.2.1 and rrweb-cssom is updated to 0.8.0.

Version 5.9.5 (2025-01-23)

[maintenance] Update dependencies tldts + tldts-core to 6.1.74.
[maintenance] Update dependency tough-cookie to 5.1.0.

Version 5.9.4 (2025-01-08)

[maintenance] The version of Plotly.js is bumped from 2.35.2 to 2.35.3. The new version contains some fixes. For details on those see the changelog of Plotly.js.
[maintenance] Update dependencies tldts + tldts-core to 6.1.71.
[maintenance] The lock file package-lock.json is converted from version 2 to version 3. Version 3 has been supported since (at least) Node.js 16 and is the default in Node.js 18. Since this project already requires Node.js 18 or later it is save to convert the file to the newer version.

Version 5.9.3 (2024-12-21)

[maintenance] Update dependency agent-base to 7.1.3.
[maintenance] Update dependency debug to 4.4.0.
[maintenance] Update dependency https-proxy-agent to 7.0.6.
[maintenance] Update dependencies tldts + tldts-core to 6.1.69.
[maintenance] Update dependency whatwg-url to 14.1.0.

Version 5.9.2 (2024-12-02)

[maintenance] Update dependencies tldts + tldts-core to 6.1.65.

Version 5.9.1 (2024-11-30)

[maintenance] Update dependency nwsapi to 2.2.16.

Version 5.9.0 (2024-11-25)

[improvement] The image rendering process is simplified and does now use less I/O operations.
[maintenance] Update dependencies tldts + tldts-core to 6.1.64.

Version 5.8.16 (2024-11-22)

[maintenance] Update dependencies tldts + tldts-core to 6.1.63.

Version 5.8.15 (2024-11-17)

[maintenance] Update dependencies tldts + tldts-core to 6.1.61.

Version 5.8.14 (2024-11-11)

[maintenance] Update dependencies tldts + tldts-core to 6.1.60.
[maintenance] Update dependency uuid to 11.0.3.

Version 5.8.13 (2024-11-03)

[maintenance] Update dependencies tldts + tldts-core to 6.1.58.

Version 5.8.12 (2024-10-30)

[maintenance] Update dependencies tldts + tldts-core to 6.1.57.

Version 5.8.11 (2024-10-29)

[bug fix] Fix error in handling of array data for graphs.
[maintenance] Update dependency parse5 to 7.2.1.
[maintenance] Update dependencies tldts + tldts-core to 6.1.56.
[maintenance] Update dependency uuid to 11.0.2.

Version 5.8.10 (2024-10-28)

[maintenance] Update dependency uuid to 11.0.1.

Version 5.8.9 (2024-10-27)

[improvement] A stack trace for some rendering errors is now logged to the console, if a stack trace is available.

Version 5.8.8 (2024-10-25)

[maintenance] Update dependencies tldts + tldts-core to 6.1.55.

Version 5.8.7 (2024-10-20)

[maintenance] Update dependencies tldts + tldts-core to 6.1.52.

Version 5.8.6 (2024-10-14)

[maintenance] Update dependency form-data to 4.0.1.
[maintenance] Update dependency parse5 to 7.2.0.
[maintenance] Update dependencies tldts + tldts-core to 6.1.51.

Version 5.8.5 (2024-10-03)

[maintenance] Update dependencies tldts + tldts-core to 6.1.50.

Version 5.8.4 (2024-09-30)

[maintenance] Update dependency nwsapi to 2.2.13.
[maintenance] Update dependencies tldts + tldts-core to 6.1.48.

Version 5.8.3 (2024-09-24)

[maintenance] Update dependency jsdom to 25.0.1.

Version 5.8.2 (2024-09-17)

[maintenance] The version of Plotly.js is bumped from 2.35.1 to 2.35.2. The new version contains some fixes. For details on those see the changelog of Plotly.js.

Version 5.8.1 (2024-09-10)

[maintenance] The version of Plotly.js is bumped from 2.35.0 to 2.35.1. The new version contains some fixes. For details on those see the changelog of Plotly.js.
[maintenance] Update dependency cssstyle to 4.1.0.
[maintenance] Update dependency debug to 4.3.7.
[maintenance] Update dependency ms to 2.1.3.

Version 5.8.0 (2024-08-31)

[maintenance] The version of Plotly.js is bumped from 2.34.0 to 2.35.0. The new version contains some new features and fixes. For details on those see the changelog of Plotly.js.

Version 5.7.3 (2024-08-26)

[maintenance] Update dependency jsdom to 25.0.0.

Version 5.7.2 (2024-07-28)

[maintenance] Update dependency debug to 4.3.6.

Version 5.7.1 (2024-07-23)

[maintenance] Update dependency jsdom to 24.1.1.

Version 5.7.0 (2024-07-20)

[maintenance] The version of Plotly.js is bumped from 2.33.0 to 2.34.0. The new version contains some new features and fixes. For details on those see the changelog of Plotly.js.

Version 5.6.5 (2024-07-13)

[maintenance] Update dependency https-proxy-agent to 7.0.5.
[maintenance] Update dependency nwsapi to 2.2.12.
[maintenance] Update dependency ws to 8.18.0.

Version 5.6.4 (2024-06-24)

[maintenance] Update dependency rrweb-cssom to 0.7.1.

Version 5.6.3 (2024-06-22)

[maintenance] Update dependency ws to 8.17.1. This fixes a DoS vulnerability in the ws package, CVE-2024-37890.

Version 5.6.2 (2024-06-11)

[maintenance] Update dependency uuid to 10.0.0.

Version 5.6.1 (2024-06-01)

[maintenance] Update dependency debug to 4.3.5.

Version 5.6.0 (2024-05-29)

[maintenance] The version of Plotly.js is bumped from 2.32.0 to 2.33.0. The new version contains some new features and fixes. For details on those see the changelog of Plotly.js.

Version 5.5.3 (2024-05-28)

[maintenance] Update dependency jsdom to 24.1.0.

Version 5.5.2 (2024-05-13)

[maintenance] Update dependency nwsapi to 2.2.10.

Version 5.5.1 (2024-05-03)

[maintenance] Update dependency tough-cookie to 4.1.4.
[maintenance] Update dependency ws to 8.17.0.

Version 5.5.0 (2024-04-26)

[maintenance] The version of Plotly.js is bumped from 2.31.1 to 2.32.0. The new version contains some new features and fixes. For details on those see the changelog of Plotly.js.
[maintenance] Update dependency nwsapi to 2.2.9.

Version 5.4.1 (2024-04-16)

[maintenance] The version of Plotly.js is bumped from 2.31.0 to 2.31.1. The new version contains some fixes. For details on those see the changelog of Plotly.js.

Version 5.4.0 (2024-04-10)

[maintenance] The version of Plotly.js is bumped from 2.30.1 to 2.31.0. The new version contains some new features and fixes. For details on those see the changelog of Plotly.js.

Version 5.3.2 (2024-03-31)

[maintenance] Update dependency agent-base to 7.1.1.

Version 5.3.1 (2024-03-16)

[maintenance] The version of Plotly.js is bumped from 2.30.0 to 2.30.1. The new version contains some fixes. For details on those see the changelog of Plotly.js.

Version 5.3.0 (2024-03-07)

[maintenance] The version of Plotly.js is bumped from 2.29.1 to 2.30.0. The new version contains some new features and fixes. For details on those see the changelog of Plotly.js.

Version 5.2.2 (2024-02-16)

[maintenance] Update dependency http-proxy-agent to 7.0.2.
[maintenance] Update dependency https-proxy-agent to 7.0.4.

Version 5.2.1 (2024-02-12)

[maintenance] The version of Plotly.js is bumped from 2.29.0 to 2.29.1. The new version contains some bug fixes. For details on those see the changelog of Plotly.js.
[maintenance] Update dependency http-proxy-agent to 7.0.1.
[maintenance] Update dependency https-proxy-agent to 7.0.3.

Version 5.2.0 (2024-02-03)

[maintenance] The version of Plotly.js is bumped from 2.28.0 to 2.29.0. The new version contains some new features and fixes. For details on those see the changelog of Plotly.js.

Version 5.1.2 (2024-01-23)

[maintenance] Update dependency jsdom to 24.0.0.

Version 5.1.1 (2024-01-09)

[maintenance] Update dependency jsdom to 23.2.0.

Version 5.1.0 (2024-01-07)

[maintenance] The version of Plotly.js is bumped from 2.27.1 to 2.28.0. The new version contains some new features and fixes. For details on those see the changelog of Plotly.js.

Version 5.0.4 (2024-01-07)

[maintenance] Update dependency jsdom to 23.1.0.

Version 5.0.3 (2023-12-28)

[maintenance] Update dependency ws to 8.16.0.

Version 5.0.2 (2023-12-17)

[maintenance] Update dependency ws to 8.15.1.

Version 5.0.1 (2023-12-10)

[maintenance] Update dependency ws to 8.15.0.

Version 5.0.0 (2023-12-01)

[breaking change] Support for Node.js 17 and older versions is dropped. The minimum required version is now Node.js 18. Node.js versions before 18 have reached their end of life, so users of those versions should upgrade to newer versions anyway.
[maintenance] Update dependency jsdom to 23.0.1.

Version 4.5.4 (2023-11-30)

[improvement] Whenever the server responds to an unallowed method with HTTP status code 405, it will now also send an Allow HTTP header to indicate the allowed methods. This behaviour is required by RFC 9110, so it should be implemented.

Furthermore, any HTTP request to the server root using the OPTIONS method will now return the allowed options via an Allow HTTP header.

Version 4.5.3 (2023-11-29)

[bug fix] Fix error in handling of unusually large payloads.

Version 4.5.2 (2023-11-10)

[maintenance] The version of Plotly.js is bumped from 2.27.0 to 2.27.1. The new version contains some chnges and fixes. For details on those see the changelog of Plotly.js.

Version 4.5.1 (2023-10-31)

[maintenance] Update dependency punycode to 2.3.1.

Version 4.5.0 (2023-10-22)

[maintenance] The version of Plotly.js is bumped from 2.26.2 to 2.27.0. The new version contains some new features and fixes. For details on those see the changelog of Plotly.js.

Version 4.4.4 (2023-10-06)

[maintenance] The version of Plotly.js is bumped from 2.26.1 to 2.26.2. The new version contains some fixes. For details on those see the changelog of Plotly.js.

Version 4.4.3 (2023-09-25)

[maintenance] The version of Plotly.js is bumped from 2.26.0 to 2.26.1. The new version contains some fixes. For details on those see the changelog of Plotly.js.

Version 4.4.2 (2023-09-21)

[maintenance] Update dependency ws to 8.14.2.

Version 4.4.1 (2023-09-14)

[maintenance] Update dependency uuid to 9.0.1.
[maintenance] Update dependency ws to 8.14.1.

Version 4.4.0 (2023-08-26)

[maintenance] The version of Plotly.js is bumped from 2.25.2 to 2.26.0. The new version contains some new features. For details on those see the changelog of Plotly.js.

Version 4.3.1 (2023-08-12)

[maintenance] The version of Plotly.js is bumped from 2.25.0 to 2.25.2. The new version contains some fixes. For details on those see the changelog of Plotly.js.

Version 4.3.0 (2023-07-28)

[maintenance] The version of Plotly.js is bumped from 2.24.3 to 2.25.0. The new version contains some fixes and new features. For details on those see the changelog of Plotly.js.

Version 4.2.3 (2023-07-23)

[maintenance] The version of Plotly.js is bumped from 2.24.2 to 2.24.3. The new version contains some fixes. For details on those see the changelog of Plotly.js.

Version 4.2.2 (2023-07-08)

[maintenance] Update dependency nwsapi to 2.2.7.

Version 4.2.1 (2023-06-20)

[maintenance] The version of Plotly.js is bumped from 2.24.0 to 2.24.2. The new version contains some fixes. For details on those see the changelog of Plotly.js.

Version 4.2.0 (2023-06-06)

[maintenance] The version of Plotly.js is bumped from 2.23.2 to 2.24.0. The new version contains some fixes and new features. For details on those see the changelog of Plotly.js.
[maintenance] Update dependency tough-cookie to 4.1.3.

Version 4.1.2 (2023-05-28)

[maintenance] Update dependency jsdom to 22.1.0.
[maintenance] Update dependency nwsapi to 2.2.5.

Version 4.1.1 (2023-05-22)

[maintenance] The version of Plotly.js is bumped from 2.23.1 to 2.23.2. The new version contains some fixes. For details on those see the changelog of Plotly.js.

Version 4.1.0 (2023-05-19)

[maintenance] The version of Plotly.js is bumped from 2.22.0 to 2.23.1. The new version contains some fixes and changes. For details on those see the changelog of Plotly.js.

Version 4.0.0 (2023-05-11)

[breaking change] Generated image files are now served directly in the response to the request instead of just providing a JSON response that contains the file name of the generated image. That is, instead of returning a JSON response like
```
{
  "success": true,
  "filename": "graph-007e94ad-97c7-4f7b-9bf1-a524f689b8b5.svg"
}
```
the image is returned directly in the HTTP response message body.

This approach has several advantages:
- Users only need to make one request to the server instead of two to get the generated image.
- The server does not get filled with generated images files as in previous versions, because the images do not need to be stored for later retrieval anymore.

Version 3.1.0 (2023-05-06)

[maintenance] The version of Plotly.js is bumped from 2.21.0 to 2.22.0. The new version contains some fixes and changes. For details on those see the changelog of Plotly.js.

Version 3.0.0 (2023-05-02)

[breaking change] Support for Node.js 15 and older versions is dropped. The minimum required version is now Node.js 16. Node.js versions before 16 have reached their end of life, so users of those versions should upgrade to newer versions anyway.
[maintenance] Update dependency jsdom to 22.0.0.

Version 2.6.1 (2023-05-01)

[maintenance] Update dependency jsdom to 21.1.2.

Version 2.6.0 (2023-04-23)

[maintenance] The version of Plotly.js is bumped from 2.20.0 to 2.21.0. The new version contains a few fixes and changes. For details on those see the changelog of Plotly.js.

Version 2.5.3 (2023-04-16)

[maintenance] Update dependency entities to 4.5.0.

Version 2.5.2 (2023-04-12)

[maintenance] Update dependency nwsapi to 2.2.4.

Version 2.5.1 (2023-04-09)

[maintenance] Update dependency nwsapi to 2.2.3.

Version 2.5.0 (2023-03-16)

[maintenance] The version of Plotly.js is bumped from 2.18.2 to 2.20.0. The new version contains a few fixes and changes. For details on those see the changelog of Plotly.js.

Version 2.4.4 (2023-03-13)

[maintenance] Update dependency jsdom to 21.1.1.
[maintenance] Update dependency ws to 8.13.0.

Version 2.4.3 (2023-02-27)

[maintenance] The version of Plotly.js is bumped from 2.18.1 to 2.18.2. The new version contains a few fixes. For details on those see the changelog of Plotly.js.

Version 2.4.2 (2023-02-13)

[maintenance] Update dependency ws to 8.12.1.

Version 2.4.1 (2023-02-04)

[maintenance] The version of Plotly.js is bumped from 2.18.0 to 2.18.1. The new version contains a few changes and fixes. For details on those see the changelog of Plotly.js.

Version 2.4.0 (2023-01-24)

[maintenance] Update dependency jsdom to 21.1.0.
[maintenance] Update dependency punycode to 2.3.0.
[maintenance] Update dependency acorn to 8.8.2.

Version 2.3.0 (2023-01-23)

[maintenance] The version of Plotly.js is bumped from 2.17.1 to 2.18.0. The new version contains a few changes and fixes. For details on those see the changelog of Plotly.js.

Version 2.2.2 (2023-01-10)

[maintenance] The version of Plotly.js is bumped from 2.17.0 to 2.17.1. The new version contains a regression fix. For details on this see the changelog of Plotly.js.

Version 2.2.1 (2023-01-10)

[maintenance] Update dependency punycode to 2.2.0.
[maintenance] Update dependency ws to 8.12.0.
[maintenance] Update dependency jsdom to 21.0.0.

Version 2.2.0 (2022-12-29)

[maintenance] The version of Plotly.js is bumped from 2.16.5 to 2.17.0. The new version contains a few fixes and new features. For details on those see the changelog of Plotly.js.

Version 2.1.5 (2022-12-19)

[maintenance] The version of Plotly.js is bumped from 2.16.4 to 2.16.5. The new version contains a few fixes. For details on those see the changelog of Plotly.js.

Version 2.1.4 (2022-12-09)

[maintenance] The version of Plotly.js is bumped from 2.16.1 to 2.16.4. The new version contains a few fixes. For details on those see the changelog of Plotly.js.

Version 2.1.3 (2022-12-09)

[maintenance] Update dependency decimal.js to 10.4.3.

Version 2.1.2 (2022-11-24)

[maintenance] Update dependency jsdom to 20.0.3.

Version 2.1.1 (2022-11-13)

[maintenance] Update dependency ws to 8.11.0.

Version 2.1.0 (2022-10-30)

[feature] The dimensions of the generated image can now be adjusted by adding the HTTP headers X-Image-Width and / or X-Image-Height to the request. If none of them are specified, the size remains at 700 x 400 pixels as in version 2.0.2.

See the readme for an example of the new feature.

Version 2.0.2 (2022-10-30)

[maintenance] Update dependency jsdom to 20.0.2.

Version 2.0.1 (2022-10-30)

[maintenance] Update dependency uuid to 9.0.0.

Version 2.0.0 (2022-10-29)

[breaking change] The file format of the generated images is changed from PNG to SVG. This is due to the internal replacement of PhantomJS with jsdom for rendering. PhantomJS does not work with newer versions of plotly.js (2.0 and later), so it had to be replaced. If you still need PNG files, then stick with version 1.5.7 of the application. However, version 1.5.7 is no longer maintained.
[breaking change] The version of Plotly.js is bumped from 1.58.5 to 2.16.1. Version 2.0.0 of Plotly.js came with some breaking changes / removed features. For details see the changelog of Plotly.js.
[breaking change] Support for Node.js 13 and older versions is dropped. The minimum required versions is now Node.js 14. Node.js versions before 14 have reached their end of life anyway, so users of those versions should upgrade to newer versions anyway.
[breaking change] The default image width is 700 pixels, and the default height is 400 pixels.

Version 1.5.7 (2022-10-28)

[maintenance] Update dependency minimist to 1.27.0.

Version 1.5.6 (2022-04-17)

[maintenance] Update dependencies graceful-fs to 4.2.10 and mkdirp to 0.5.6.

Version 1.5.5 (2022-03-30)

[maintenance] Update dependency minimist to 1.26.0. This fixes a prototype pollution vulnerability in the minimist package, CVE-2021-44906.

Version 1.5.4 (2022-03-21)

[maintenance] Update dependencies mime-db to 1.52.0 and mime-types to 2.1.35.

Version 1.5.3 (2022-01-23)

[maintenance] Update dependencies graceful-fs to 4.2.9, qs to 6.5.3, and sshpk to 1.17.0.

Version 1.5.2 (2021-12-07)

[maintenance] Update dependencies asn1 to 0.2.6, json-schema to 0.4.0, jsprim to 1.4.2, mime-db to 1.51.0, and mime-types to 2.1.34.

Version 1.5.1 (2021-10-10)

[maintenance] Update dependencies core-util-is to 1.0.3, graceful-fs to 4.2.8, mime-db to 1.50.0, mime-types to 2.1.33.

Version 1.5.0 (2021-08-01)

[new feature] The port to which the server binds can now be changed by setting the environment variable PORT. If PORT is not set or is not a valid port number, then the default port 3000 is used.
[new feature] The hostname which the server shall use can now be changed by setting the environment variable HOST. If HOST is not set, then localhost will be used as default.

Version 1.4.2 (2021-08-01)

[maintenance] Update dependencies buffer-from to 1.1.2, mime-db to 1.49.0 and mime-types to 2.1.32.

Version 1.4.1 (2021-07-18)

[maintenance] The version of Plotly.js is bumped from 1.58.4 to 1.58.5.
[maintenance] The package dependencies mime-db and mime-types are updated to 1.48.0 and 2.1.31, respectively.

Version 1.4.0 (2021-04-18)

[improvement] The generated names for PNG files are using UUIDs (version 4) instead of a Unix timestamp in their name from now on. That is, the JSON output of a successful render will change from something like

{
  "success": true,
  "filename": "graph-1604764778687.png"
}

to something like

{
  "success": true,
  "filename": "graph-25273999-dea9-4da2-aad2-dbdf2e38a0c9.png"
}

instead. While it is highly unlikely that rendering of a plot with Plotly.js and JavaScript is so fast that two PNG files are created within the same millisecond this change makes sure we are on the safe side here.

Also note that the application never gave any guarantees for the naming pattern of the generated files in the first place. Therefore, anyone consuming the JSON response should treat the filename value as a purely random file name.

Version 1.3.0

The version of Plotly.js is bumped from 1.57.1 to 1.58.4.

Version 1.2.3

This is the initial release based on the ECharts server (https://gitlab.com/striezel/echarts-node-export-server) that does the same thing, just with ECharts.

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