[build] Clarify transform-runtime, runtime version

[eps1lon]

I always assumed transform-runtime and runtime version need to be related. Turns out there's actually an option to specify the @babel/runtime version which isn't documented but a maintainer mentioned on SO (https://stackoverflow.com/a/54066848/3406963).

I'm opening a PR to the babel docs first to see if this is still considered public. Opening here to see if this has actual bundle size implications.

[merceyz]

I'm opening a PR to the babel docs first to see if this is still considered public

I'm going to assume you already found these but adding them here anyways.

babel/website#2055
babel/babel#10170 (comment)

[eps1lon]

@merceyz Thanks for the link! I didn't look into it much. Just wanted to throw CI quickly at this to see what this even does and then look into it more.

[eps1lon]

Switching from draft to bump azure pipelines. Just guessing that this is the cause.

[mui-pr-bot]

Details of bundle changes.

Comparing: d30e6bb...9455045

bundle	Size Change	Size	Gzip Change	Gzip
docs.main	▼ -21.4 kB (-3.47% )	595 kB	▼ -2.37 kB (-1.20% )	194 kB
docs.landing	▼ -492 B (-0.96% )	50.5 kB	▼ -216 B (-1.60% )	13.3 kB
@material-ui/core	--	361 kB	--	98.7 kB
@material-ui/core[umd]	--	317 kB	--	91.9 kB
@material-ui/lab	--	185 kB	--	55.2 kB
@material-ui/styles	--	51.2 kB	--	15.4 kB
@material-ui/system	--	14.8 kB	--	4.07 kB
Alert	--	83.9 kB	--	26.3 kB
AlertTitle	--	64.3 kB	--	20.2 kB
AppBar	--	64.1 kB	--	20.1 kB
Autocomplete	--	132 kB	--	41.3 kB
Avatar	--	65.4 kB	--	20.6 kB
AvatarGroup	--	62.4 kB	--	19.6 kB
Backdrop	--	68 kB	--	21 kB
Badge	--	65.4 kB	--	20.4 kB
BottomNavigation	--	62.5 kB	--	19.6 kB
BottomNavigationAction	--	75.7 kB	--	23.9 kB
Box	--	71 kB	--	21.7 kB
Breadcrumbs	--	67.9 kB	--	21.3 kB
Button	--	79.9 kB	--	24.5 kB
ButtonBase	--	74.2 kB	--	23.3 kB
ButtonGroup	--	83.4 kB	--	25.5 kB
Card	--	63 kB	--	19.7 kB
CardActionArea	--	75.3 kB	--	23.7 kB
CardActions	--	62.2 kB	--	19.5 kB
CardContent	--	62.1 kB	--	19.4 kB
CardHeader	--	65.2 kB	--	20.5 kB
CardMedia	--	62.5 kB	--	19.7 kB
Checkbox	--	83.2 kB	--	26.3 kB
Chip	--	82.8 kB	--	25.4 kB
CircularProgress	--	64.2 kB	--	20.3 kB
ClickAwayListener	--	3.91 kB	--	1.55 kB
Collapse	--	68.2 kB	--	21.1 kB
colorManipulator	--	3.88 kB	--	1.52 kB
Container	--	63.4 kB	--	19.8 kB
CssBaseline	--	57.7 kB	--	18.1 kB
Dialog	--	83.2 kB	--	25.9 kB
DialogActions	--	62.2 kB	--	19.5 kB
DialogContent	--	62.3 kB	--	19.5 kB
DialogContentText	--	64.2 kB	--	20.2 kB
DialogTitle	--	64.4 kB	--	20.2 kB
Divider	--	62.7 kB	--	19.7 kB
Drawer	--	85 kB	--	25.8 kB
ExpansionPanel	--	72.5 kB	--	22.7 kB
ExpansionPanelActions	--	62.2 kB	--	19.5 kB
ExpansionPanelDetails	--	62.1 kB	--	19.4 kB
ExpansionPanelSummary	--	78.3 kB	--	24.7 kB
Fab	--	77 kB	--	24 kB
Fade	--	23.6 kB	--	8 kB
FilledInput	--	73.7 kB	--	22.9 kB
FormControl	--	64.5 kB	--	20.1 kB
FormControlLabel	--	65.6 kB	--	20.6 kB
FormGroup	--	62.1 kB	--	19.5 kB
FormHelperText	--	63.5 kB	--	20 kB
FormLabel	--	63.6 kB	--	19.7 kB
Grid	--	65.2 kB	--	20.4 kB
GridList	--	62.6 kB	--	19.7 kB
GridListTile	--	63.9 kB	--	20 kB
GridListTileBar	--	63.3 kB	--	19.9 kB
Grow	--	24.2 kB	--	8.21 kB
Hidden	--	66.1 kB	--	20.7 kB
Icon	--	62.9 kB	--	19.7 kB
IconButton	--	76.3 kB	--	23.8 kB
Input	--	72.6 kB	--	22.7 kB
InputAdornment	--	65.2 kB	--	20.5 kB
InputBase	--	70.8 kB	--	22.2 kB
InputLabel	--	65.5 kB	--	20.2 kB
LinearProgress	--	65.4 kB	--	20.5 kB
Link	--	66.7 kB	--	21.1 kB
List	--	62.5 kB	--	19.5 kB
ListItem	--	77.3 kB	--	24.2 kB
ListItemAvatar	--	62.2 kB	--	19.5 kB
ListItemIcon	--	62.3 kB	--	19.5 kB
ListItemSecondaryAction	--	62.1 kB	--	19.5 kB
ListItemText	--	65.1 kB	--	20.4 kB
ListSubheader	--	62.9 kB	--	19.8 kB
Menu	--	88.9 kB	--	27.4 kB
MenuItem	--	78.4 kB	--	24.5 kB
MenuList	--	66.2 kB	--	20.7 kB
MobileStepper	--	68 kB	--	21.3 kB
Modal	--	14.5 kB	--	5.05 kB
NativeSelect	--	77 kB	--	24.3 kB
NoSsr	--	2.19 kB	--	1.04 kB
OutlinedInput	--	74.1 kB	--	23.1 kB
Paper	--	62.5 kB	--	19.5 kB
Popover	--	83.3 kB	--	25.8 kB
Popper	--	28.8 kB	--	10.3 kB
Portal	--	2.92 kB	--	1.3 kB
Radio	--	84.3 kB	--	26.6 kB
RadioGroup	--	64.6 kB	--	20 kB
Rating	--	70.6 kB	--	22.7 kB
RootRef	--	4.24 kB	--	1.64 kB
Select	--	116 kB	--	34.4 kB
Skeleton	--	63 kB	--	19.9 kB
Slide	--	25.6 kB	--	8.73 kB
Slider	--	76.8 kB	--	24.3 kB
Snackbar	--	75.5 kB	--	23.6 kB
SnackbarContent	--	63.7 kB	--	20.1 kB
SpeedDial	--	86.4 kB	--	27.2 kB
SpeedDialAction	--	118 kB	--	37.5 kB
SpeedDialIcon	--	64.7 kB	--	20.3 kB
Step	--	62.8 kB	--	19.7 kB
StepButton	--	82.5 kB	--	26.1 kB
StepConnector	--	62.8 kB	--	19.8 kB
StepContent	--	69.3 kB	--	21.7 kB
StepIcon	--	64.8 kB	--	20.2 kB
StepLabel	--	68.7 kB	--	21.7 kB
Stepper	--	65 kB	--	20.5 kB
styles/createMuiTheme	--	16.6 kB	--	5.83 kB
SvgIcon	--	63.2 kB	--	19.8 kB
SwipeableDrawer	--	92.4 kB	--	28.9 kB
Switch	--	82.4 kB	--	26 kB
Tab	--	76.5 kB	--	24.2 kB
Table	--	62.7 kB	--	19.7 kB
TableBody	--	62.2 kB	--	19.5 kB
TableCell	--	64.2 kB	--	20.2 kB
TableContainer	--	62.1 kB	--	19.4 kB
TableFooter	--	62.2 kB	--	19.5 kB
TableHead	--	62.2 kB	--	19.5 kB
TablePagination	--	143 kB	--	41.8 kB
TableRow	--	62.6 kB	--	19.6 kB
TableSortLabel	--	77.6 kB	--	24.4 kB
Tabs	--	85.8 kB	--	27.2 kB
TextareaAutosize	--	5.12 kB	--	2.14 kB
TextField	--	125 kB	--	36.5 kB
ToggleButton	--	76.3 kB	--	24.2 kB
ToggleButtonGroup	--	63.3 kB	--	19.9 kB
Toolbar	--	62.5 kB	--	19.6 kB
Tooltip	--	102 kB	--	32.3 kB
TreeItem	--	74.1 kB	--	23.5 kB
TreeView	--	66.8 kB	--	21 kB
Typography	--	63.8 kB	--	20 kB
useAutocomplete	--	14.5 kB	--	5.25 kB
useMediaQuery	--	2.51 kB	--	1.06 kB
Zoom	--	23.6 kB	--	8.12 kB

Generated by 🚫 dangerJS against 9455045

[eps1lon]

I'm leaving this on hold for now until the upstream PRs are resolved.

[merceyz]

@eps1lon This was reverted upstream vercel/next.js#10233

[eps1lon]

@eps1lon This was reverted upstream zeit/next.js#10233

I give up working with the zeit team. No communication. No discussion. Zeit changes good, other changes bad. Why? Don't care.

Pros still stand:

• observable size reduction
• the people who wrote that code agree
• the transform is important. the transformed methods are not supported in IE 11

cons are missing due to lack of communication.