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/**
* Convert a string or number to valid reader ID
* @param {string|number} val The value to convert
* @returns {number|undefined} A valid ID or undefined if we could not convert val
*/
export function toValidId( val ) {
const valType = typeof val;
if ( valType === 'string' && /^\d+$/.test( val ) ) {
const v = Number( val );
return v === 0 ? undefined : v;
}
if ( valType === 'number' ) {
if ( val === 0 || isNaN( val ) || ! isFinite( val ) || val !== Math.floor( val ) ) {
return undefined;
}
return val;
}
return undefined;
}
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