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generateStrictModeCheck()

generateStrictModeCheck(objectVar, allowedKeys, ctx, customMessage?): object

Experimental

Generates code to check for extra keys in strict mode.

Parameters​

objectVar: string​

The variable name of the object

allowedKeys: string[]​

Array of allowed property names

ctx: GeneratorContext​

The generator context

customMessage?: string​

Optional custom error message

Returns: object​

Generated code lines and updated context

code: string[]​

ctx: GeneratorContext​

Since​

2.0.0

Example​

const result = generateStrictModeCheck("value", ["name", "age"], ctx);
// result.code = [
//   'for (var k in value) {',
//   '  if (Object.prototype.hasOwnProperty.call(value, k)) {',
//   '    if (k !== "name" && k !== "age") return "Unexpected property: " + k;',
//   '  }',
//   '}'
// ]