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常用的正则表达式 #93

Open herrdu opened 2 years ago

herrdu commented 2 years ago 
/**
 * Some actual error messages for null:
 *
 * TypeError: Cannot read property 'bar' of null
 * TypeError: Cannot convert null value to object
 * TypeError: foo is null
 * TypeError: null has no properties
 * TypeError: null is not an object (evaluating 'foo.bar')
 * TypeError: null is not an object (evaluating '(" undefined ", null).bar')
 */
const nullPattern = /^null | null$|^[^(]* null /i;
const undefinedPattern = /^undefined | undefined$|^[^(]* undefined /i;