pdf.js/external/dist/README.md

# PDF.js

PDF.js is a Portable Document Format (PDF) library that is built with HTML5.
Our goal is to create a general-purpose, web standards-based platform for
parsing and rendering PDFs.

This is a pre-built version of the PDF.js source code. It is automatically
generated by the build scripts.

For usage with older browsers or environments, without support for modern
features such as optional chaining, nullish coalescing,
and private `class` fields/methods; please see the `legacy/` folder.

See https://github.com/mozilla/pdf.js for learning and contributing.
Adds readme file for the pdfjs-dist repo. 2014-09-24 21:10:09 +09:00			`# PDF.js`

			`PDF.js is a Portable Document Format (PDF) library that is built with HTML5.`
			`Our goal is to create a general-purpose, web standards-based platform for`
			`parsing and rendering PDFs.`

			`This is a pre-built version of the PDF.js source code. It is automatically`
			`generated by the build scripts.`

Update the main, and pdfjs-dist, README to also include recent ECMAScript features This adds "optional chaining" and "nullish coalescing" to the list of features needed when using the modern, i.e. non-translated/non-polyfilled, build of the PDF.js library. 2021-01-20 01:41:50 +09:00			`For usage with older browsers or environments, without support for modern`
[api-minor] Add the Babel `targets`-option to avoid transpiling code for unsupported browsers Currently we simply use the Babel `preset-env` in the `legacy`-builds of the PDF.js library. This has the side-effect of transpiling the code for very old browsers/environments, including ones that we (since many years) no longer support which unnecessarily bloats the size of the `legacy`-builds. For the CSS files we're only targeting the supported browsers, and it's thus possible to extend that to also apply to Babel. One of the most significant changes, with this patch, is that we'll no longer polyfill `async`/`await` in the `legacy`-builds. However, this shouldn't be an issue given the browsers that we currently support in PDF.js; please refer to: - https://github.com/mozilla/pdf.js/wiki/Frequently-Asked-Questions#faq-support - https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/async_function#browser_compatibility 2022-08-19 17:45:40 +09:00			`features such as optional chaining, nullish coalescing,`
[api-minor] Remove the, in `legacy` builds, bundled `ReadableStream` polyfill According to the MDN compatibility data, see https://developer.mozilla.org/en-US/docs/Web/API/ReadableStream#browser_compatibility, all browsers that we support have native `ReadableStream` implementations (since quite some time too). Hence only Node.js is now lagging behind w.r.t. `ReadableStream` support, and its experimental implementation doesn't really help us given the life-span of the LTS releases (see https://en.wikipedia.org/wiki/Node.js#Releases). It seems quite unfortunate to bundle a `ReadableStream` polyfill in the `legacy` builds when it's unnecessary in browsers, given its overall size, but fortunately we can avoid that by simply listing `web-streams-polyfill` as a dependency for the `pdfjs-dist` library. 2022-02-13 01:30:39 +09:00			and private `class` fields/methods; please see the `legacy/` folder.
[api-minor] Produce non-translated/non-polyfilled builds by default 2019-10-15 04:19:31 +09:00
Adds readme file for the pdfjs-dist repo. 2014-09-24 21:10:09 +09:00			`See https://github.com/mozilla/pdf.js for learning and contributing.`