Platform and version requirements: JS (1.1)
abstract operator fun set(propertyName: String, value: Any?)

Calls of the function will be translated to an assignment of value to the receiver indexed (with square brackets/index operation) with propertyName.

E.g. for the following code:

fun test(j: Json, p: String, newValue: Any) {
    j["prop"] = 1
    j.set(p, newValue)

will be generated:

function test(j, p, newValue) {
    j["prop"] = 1;
    j[p] = newValue;

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