The benchmark chart supposes //website/data.json has the signature of BenchmarkData[] where BenchmarkData is defined like the below:
interface ExecTimeData {
mean: number
stddev: number
user: number
system: number
min: number
max: number
}
interface BenchmarkData {
created_at: string,
sha1: string,
binary_size?: number,
benchmark: {
[key: string]: ExecTimeData
}
}