fast-cartesian/build/src/validate.js

Fast cartesian product

export const validateInputs=(inputs)=>{
if(!Array.isArray(inputs)){
throw new TypeError("Argument must be an array of arrays")
}

inputs.forEach(validateInput);
validateDimensions(inputs);
validateCombinations(inputs)
};

const validateInput=(input)=>{
if(!Array.isArray(input)){
throw new TypeError(`Argument must be an array: ${input}`)
}
};




const validateDimensions=({length})=>{
if(length>=MAX_DIMENSIONS){
throw new TypeError(
`Too many arrays (${length}): please use the 'big-cartesian' library instead of 'fast-cartesian'`
)
}
};

const MAX_DIMENSIONS=100;


const validateCombinations=(inputs)=>{
const size=inputs.reduce(multiplySize,1);

if(size>=MAX_SIZE){
const sizeStr=Number.isFinite(size)?` (${size.toExponential(0)})`:"";
throw new TypeError(
`Too many combinations${sizeStr}: please use the 'big-cartesian' library instead of 'fast-cartesian'`
)
}
};

const multiplySize=(size,input)=>size*input.length;


const MAX_SIZE=2**32;