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Previously, when loading a generator chunk (e.g.,
javascript_compressed.js) as a script (e.g., in a browser using
a <SCRIPT> tag), only a single named export from that chunk would
be made available (e.g, javascriptGenerator would be made availabe
as Blockly.JavaScript).
Until recently, that was fine because each generator chunk had only
a single named export, but now each one additionally has a
<Lang>Generator class and Order enum export.
To allow these new exports to be accessed by script users, the
chunk wrappers are modified to provide the whole export object
at a correspondingly-named global variable—e.g., when loaded as
a script javascript_compressed.js creates a global variable named
javascript, so the named exports can be accessed as
javascript.javascriptGenerator, javascript.JavascriptGenerator
and javascript.Order, as if the user had imported them via
import * as javascript from 'blockly/javascript';
This PR includes a breaking change and a deprecation, both of
which are only applicable when loading generators as scripts
(e.g. via a <SCRIPT> tag):
BREAKING CHANGE: The generator chunks will, when loaded as scripts
(e.g. via a <SCRIPT> tag, now clobber any existing global variable
of the corresponding name:
- dart_compresed.js will set dart
- javascript_compresed.js will set javascript
- lua_compresed.js will set lua
- php_compresed.js will set php
- python_compresed.js will set python
DEPRECATION: Accessing the generator instances at their previous
locations (Blockly.Dart, Blockly.JavaScript, Blockly.Lua,
Blockly.PHP, and Blockly.Python) is deprecated and may cease
to work in a future version of Blockly.