Allow for passing null / undefined into a typed, none required prop

If a prop is declared with type validation but required:false, the validation will fail when passing either null or undefined as the value.

I think that the type validation should only occur on none required props if an actual value (not null or undefined) has been passed. I believe this is similar to issue #1070.

Here’s a JSBin demonstrating this.

[rmp135]

Thanks. I was going to suggest a nullable prop option for allowing nulls to be passed down in the case of none required props. In this case, the default would only apply if the prop was completely absent.

[lopugit]

// check default value if (value === undefined) { value = getPropDefaultValue(vm, prop, key); // since the default value is a fresh copy, // make sure to observe it. var prevShouldConvert = observerState.shouldConvert; observerState.shouldConvert = true; observe(value); observerState.shouldConvert = prevShouldConvert; } { assertProp(prop, key, value, vm, absent); }

I found this bit in vue.js v2 dist, is it around this part that defaults are now handled?

I can’t find a comment of

Build a function that applies props to a vm.

anywhere in the current v2 vue.js build