How can I build without transform let to var

[gengjiawen]

Currently the debug build

var EMPTY_OBJ = {};
var EMPTY_ARR = [];
var IS_NON_DIMENSIONAL = /acit|ex(?:s|g|n|p|$)|rph|grid|ows|mnc|ntw|ine[ch]|zoo|^ord|itera/i;
...

I tried to change babel.config.js target, but no luck.

[marvinhagemeister]

What do you mean with "debug build"? Afaik we don't distribute such a thing.

[rschristian]

I imagine it's a misunderstanding in what the build:debug script actually does?

For OP, this doesn't create a debug build of preact, rather it builds the debug subpath (preact/debug).

[gengjiawen]

What do you mean with "debug build"? Afaik we don't distribute such a thing.

I mean the non-minify version. microbundle watch --no-compress

[developit]

microbundle watch --no-compress --format es

Also the main branch builds ESNext output by default, including in watch mode.

[developit]

What's the reason for wanting to skip this transform? We transform let to var because the var version is both smaller and faster.

[gengjiawen]

I just curious is there a way to change this. I used to read es6 code.