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'use strict'
module.exports = (options) => ({
terserOptions: {
compress: {
// turn off flags with small gains to speed up minification
arrows: false,
collapse_vars: false, // 0.3kb
comparisons: false,
computed_props: false,
hoist_funs: false,
hoist_props: false,
hoist_vars: false,
inline: false,
loops: false,
negate_iife: false,
properties: false,
reduce_funcs: false,
reduce_vars: false,
switches: false,
toplevel: false,
typeofs: false,
// a few flags with noticable gains/speed ratio
// numbers based on out of the box vendor bundle
booleans: true, // 0.7kb
if_return: true, // 0.4kb
sequences: true, // 0.7kb
unused: true, // 2.3kb
// required features to drop conditional branches
conditionals: true,
dead_code: true,
evaluate: true,
},
mangle: {
safari10: true,
},
},
// parallel: options.parallel,
extractComments: false,
})
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