Treeche NPM | npm.io

Treeche 🌴

What is this

Tree shakable Checker.

check your module is tree-shakable or not, in each module and reduce bundle size!!

Feature ✨

typescript support
you can check in each file
you can check with the unique entrypoint
glob pattern support
pretty diagnostics report.

How to use 🔧

npm install treeche -D // TBD
treeche "**/*.ts" --excludes "node_modules" "**/*.test.ts"

Example 📕

// this is not tree-shakable because have side-effect

const currentYear = new Date().getFullYear();

export function getCurrentYear() {
    return `Year ${currentYear}`
}

treeche "~~~"

log

🚨 ~/application/side_effect.ts is not tree-shakable due to the following code:

\`\`\`
const currentYear = new Date().getFullYear();
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
\`\`\`

if you fix this code such above

// this is tree-shakable because this does not have side-effect

export function getCurrentYear(currentYear: string) {
    return `Year ${currentYear}`
}

log

Congratulation 🎉 All files are tree-shakeable ✨

command 💻

kind	name	description	example
argument	inputs	input files to check tree-shakable. you can use Node glob pattern	treeche "src/*/.ts"
option	excludes	excludes files to filter from inputs. you can use Node glob pattern	treeche "src/*/.ts" --e "node_modules"
option	entry point	the unique entry point to check tree-shakable. if you specify input with this, treeche will bundle so you can check tree-shakable also in node_modules	treeche --entry-point ./src/main.ts