Existence Checks

• labelv8

Safe Object Property Access

• labelobject
• labelobjects
• labelproperties
• labelv8

Null-safe Getter Deopt

• labelobjects
• labelobject
• labelproperties
• labelv8

Object.keys vs for..in

For "generic" for..in uses, that see different kinds of objects - i.e. arrays, fast-mode objects, di...

• labelfor..in
• labelobject.keys
• labelv8
• labelchrome

Prepack of simple constructor calls

• labelprepack
• labelv8

ToBoolean vs. undefined vs. void 0

• labelv8
• labeltoboolean
• labelundefined

JSON.parse vs. eval

• labelv8
• labeljson.parse
• labeleval

Array cloning (results depending on N)

Performance characteristics of the different ways to clone an array (ignoring semantic differences),...

• labelv8

Array cloning (N=1000)

Performance characteristics of the different ways to clone an array (ignoring semantic differences),...

• labelv8

Apply functions

Responding to question from Sam at https://twitter.com/samccone/status/896477039389138944

• labelv8
• labelnode

six-speed-arrow-declare

• labelv8

Unique values of an array

• labelv8

Array spread performance

• labelv8

allPositive

• labelv8

Unique array

• labelv8
• labelarray