// This regex will have fast negatives meaning valid identifiers may not pass // this test. However this is only used during static generation to provide hints // about why a page bailed out of some or all prerendering and we can use bracket notation // for example while `ಠ_ಠ` is a valid identifier it's ok to print `searchParams['ಠ_ಠ']` // even if this would have been fine too `searchParams.ಠ_ಠ` const isDefinitelyAValidIdentifier = /^[A-Za-z_$][A-Za-z0-9_$]*$/ export function describeStringPropertyAccess(target: string, prop: string) { if (isDefinitelyAValidIdentifier.test(prop)) { return `\`${target}.${prop}\`` } return `\`${target}[${JSON.stringify(prop)}]\`` } export function describeHasCheckingStringProperty( target: string, prop: string ) { const stringifiedProp = JSON.stringify(prop) return `\`Reflect.has(${target}, ${stringifiedProp})\`, \`${stringifiedProp} in ${target}\`, or similar` } export const wellKnownProperties = new Set([ 'hasOwnProperty', 'isPrototypeOf', 'propertyIsEnumerable', 'toString', 'valueOf', 'toLocaleString', // Promise prototype // fallthrough 'then', 'catch', 'finally', // React Promise extension // fallthrough 'status', // React introspection 'displayName', '_debugInfo', // Common tested properties // fallthrough 'toJSON', '$$typeof', '__esModule', ])