brew install martindelille/tap/qmlfmt

git submodule update --init --recursive
mkdir build
cd build
cmake ..
make

Usage: qmlfmt [options] path

Without an explicit path, it processes the standard input. Given a file, it operates on that file; given a directory, it operates on all qml files in that directory, recursively. (Files starting with a period are ignored.) By default, qmlfmt prints the reformatted sources to standard output.

-?, -h, --help             Displays this help.
-v, --version              Displays version information.
-t, --tab-size <tab size>  How many spaces to replace tabs with
-i, --indent <indent>      How many spaces to use for indentation
-l, --list                 Do not print reformatted sources to standard
                           output. If a file's formatting is different from
                           qmlfmt's, print its name to standard output.
-w, --overwrite            Do not print reformatted sources to standard
                           output. If a file's formatting is different from
                           qmlfmt's, overwrite it with qmlfmt's version.
-e, --error                Print all errors.
-d, --diff                 Do not print reformatted sources to standard
                           output. If a file's formatting is different than
                           qmlfmt's, print diffs to standard output.

path                       file(s) or directory to process. If not set,
                           qmlfmt will process the standard input.