Modern Event System: export internal FB flag for testing

[trueadm]

This re-exports the enableModernEventSystem flag so we can test this internally at FB.

[codesandbox-ci]

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Sandbox	Source
confident-davinci-u4tqf	Configuration

[sizebot]

Details of bundled changes.

Comparing: 60b11f6...0e4859d

react-dom

File	Filesize Diff	Gzip Diff	Prev Size	Current Size	Prev Gzip	Current Gzip	ENV
react-dom.profiling.min.js	0.0%	0.0%	123.84 KB	123.84 KB	38.64 KB	38.64 KB	NODE_PROFILING
ReactDOM-dev.js	+0.9%	+0.8%	897.53 KB	905.76 KB	200.61 KB	202.13 KB	FB_WWW_DEV
react-dom-unstable-native-dependencies.production.min.js	0.0%	0.0%	10.27 KB	10.27 KB	3.49 KB	3.5 KB	UMD_PROD
ReactDOMServer-dev.js	0.0%	0.0%	137.25 KB	137.31 KB	35.06 KB	35.07 KB	FB_WWW_DEV
react-dom-test-utils.development.js	0.0%	-0.0%	53.78 KB	53.78 KB	14.01 KB	14.01 KB	UMD_DEV
react-dom-test-utils.production.min.js	0.0%	-0.0%	10.96 KB	10.96 KB	4.17 KB	4.17 KB	UMD_PROD
ReactDOMTesting-prod.js	0.0%	-0.0%	368.74 KB	368.74 KB	67.46 KB	67.46 KB	FB_WWW_PROD
react-dom-test-utils.development.js	0.0%	-0.0%	49.56 KB	49.56 KB	13.52 KB	13.52 KB	NODE_DEV
ReactDOMTesting-profiling.js	0.0%	-0.0%	368.74 KB	368.74 KB	67.46 KB	67.46 KB	FB_WWW_PROFILING
react-dom-server.node.development.js	0.0%	-0.0%	131 KB	131 KB	34.81 KB	34.81 KB	NODE_DEV
react-dom-test-utils.production.min.js	0.0%	0.0%	10.81 KB	10.81 KB	4.1 KB	4.1 KB	NODE_PROD
react-dom-server.node.production.min.js	0.0%	0.0%	20.83 KB	20.83 KB	7.61 KB	7.61 KB	NODE_PROD
react-dom.development.js	0.0%	0.0%	912.84 KB	912.84 KB	199.76 KB	199.77 KB	UMD_DEV
ReactTestUtils-dev.js	+0.1%	+0.1%	51.31 KB	51.37 KB	13.7 KB	13.72 KB	FB_WWW_DEV
react-dom-server.browser.production.min.js	0.0%	0.0%	20.51 KB	20.51 KB	7.51 KB	7.51 KB	UMD_PROD
react-dom-server.browser.development.js	0.0%	-0.0%	129.78 KB	129.78 KB	34.55 KB	34.55 KB	NODE_DEV
ReactDOM-prod.js	🔺+1.5%	🔺+1.2%	370.72 KB	376.26 KB	67.55 KB	68.37 KB	FB_WWW_PROD
ReactDOM-profiling.js	+1.5%	+1.2%	381.98 KB	387.52 KB	69.67 KB	70.48 KB	FB_WWW_PROFILING
react-dom-unstable-fizz.browser.production.min.js	0.0%	🔺+0.1%	1.19 KB	1.19 KB	698 B	699 B	UMD_PROD
react-dom-unstable-fizz.browser.production.min.js	0.0%	🔺+0.2%	1 KB	1 KB	609 B	610 B	NODE_PROD

ReactDOM: size: 0.0%, gzip: 0.0%

Size changes (experimental)

Generated by 🚫 dangerJS against 0e4859d

[sizebot]

Details of bundled changes.

Comparing: 60b11f6...0e4859d

react-dom

File	Filesize Diff	Gzip Diff	Prev Size	Current Size	Prev Gzip	Current Gzip	ENV
ReactDOM-profiling.js	+1.5%	+1.3%	406.37 KB	412.52 KB	74.08 KB	75.04 KB	FB_WWW_PROFILING
ReactTestUtils-dev.js	+0.1%	+0.1%	51.31 KB	51.38 KB	13.7 KB	13.71 KB	FB_WWW_DEV
react-dom-unstable-native-dependencies.development.js	0.0%	-0.0%	55.86 KB	55.86 KB	14.46 KB	14.46 KB	NODE_DEV
react-dom.production.min.js	0.0%	-0.0%	116.01 KB	116.01 KB	37.17 KB	37.17 KB	UMD_PROD
react-dom.profiling.min.js	0.0%	-0.0%	119.54 KB	119.54 KB	38.33 KB	38.33 KB	UMD_PROFILING
ReactDOM-dev.js	+1.0%	+1.1%	939.77 KB	949.32 KB	209.49 KB	211.7 KB	FB_WWW_DEV
ReactDOM-prod.js	🔺+1.6%	🔺+1.3%	395.04 KB	401.18 KB	71.91 KB	72.85 KB	FB_WWW_PROD
react-dom-unstable-fizz.node.development.js	0.0%	-0.1%	3.68 KB	3.68 KB	1.33 KB	1.33 KB	NODE_DEV
react-dom-server.browser.development.js	0.0%	-0.0%	128.27 KB	128.27 KB	34.33 KB	34.33 KB	NODE_DEV
react-dom-test-utils.development.js	0.0%	-0.0%	53.77 KB	53.77 KB	14 KB	14 KB	UMD_DEV
react-dom-unstable-fizz.browser.development.js	0.0%	-0.1%	3.34 KB	3.34 KB	1.26 KB	1.26 KB	UMD_DEV
react-dom-test-utils.production.min.js	0.0%	-0.0%	10.94 KB	10.94 KB	4.16 KB	4.16 KB	UMD_PROD
ReactDOMServer-dev.js	0.0%	+0.1%	138.1 KB	138.16 KB	35.2 KB	35.22 KB	FB_WWW_DEV
react-dom-test-utils.production.min.js	0.0%	0.0%	10.79 KB	10.79 KB	4.09 KB	4.09 KB	NODE_PROD
react-dom-unstable-native-dependencies.development.js	0.0%	-0.0%	58.9 KB	58.9 KB	14.7 KB	14.7 KB	UMD_DEV
react-dom-unstable-fizz.browser.production.min.js	0.0%	🔺+0.2%	1013 B	1013 B	601 B	602 B	NODE_PROD

Size changes (stable)

Generated by 🚫 dangerJS against 0e4859d