quick-format

quick format

Solves a problem with util.format in <= Node 5.9

usage

var format = require('quick-format')
format(['hello %s %j %d', 'world', {obj: true}, 4, {another: 'obj'}])

util.format

In util.format for Node 5.9, performance is significantly affected when we pass in more arguments than interpolation characters, e.g

util.format('hello %s %j %d', 'world', {obj: true}, 4, {another: 'obj'})

This is mostly due to the use of util.inspect. Use JSON.stringify (safely) instead which is significantly faster.

It also takes an array instead of arguments, which helps us avoid the use of apply in some cases.

Also - for speed purposes, we ignore symbol.

Benchmarks

Benchmarks are very marginally slower than 5.9 util.format when there is no "tail" arguments,

util*50000: 112.749ms
quick*50000: 118.393ms
utilWithTailObj*50000: 517.232ms
quickWithTailObj*50000: 141.821ms
util*50000: 111.217ms
quick*50000: 117.432ms
utilWithTailObj*50000: 504.271ms
quickWithTailObj*50000: 142.759ms

Acknowledgements

Sponsored by nearForm