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BUBLÉ(1) User Commands BUBLÉ(1)


Bublé - Fast ES2015 compiler for Node.js


buble [options] <inputfile>


Bublé is a ES2015 compiler : it will turn ES6 javascript code into Javascript that can run in older ES5 environments. Notice that not all of ES6 is supported, either because they give size or performance issues or because they can't be transpiled to ES5.


-v, --version Show version number

-h, --help Show this help message -i, --input Input (alternative to <entry file>)

-o, --output <output> Output (if absent, prints to stdout)

-m, --sourcemap Generate sourcemap (`-m inline` for inline map)

-t, --target Select compilation targets

-y, --yes Transforms to always apply (overrides --target)

-n, --no Transforms to always skip (overrides --target)

--jsx Custom JSX pragma

--objectAssign Specify Object.assign or equivalent polyfill

--no-named-function-expr Don't output named function expressions


# Compile input.js to output.js buble input.js > output.js

# Compile input.js to output.js, write sourcemap to buble input.js -o output.js -m

# Compile input.js to output.js with inline sourcemap buble input.js -o output.js -m inline

# Only use transforms necessary for output.js to run in FF43 and Node 5 buble input.js -o output.js -t firefox:43,node:5

# As above, but use arrow function and destructuring transforms buble input.js -o output.js -t firefox:43,node:5 -y arrow,destructuring

# Compile all the files in src/ to dest/ buble src -o dest


* When piping to stdout, only inline sourcemaps are permitted


For more information visit

September 2017 Bublé version 0.15.2