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31 lines
1000 B
31 lines
1000 B
// Minimal util module implementation for browser
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const util = {
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inherits: () => {},
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format: (...args) => args.join(" "),
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inspect: (obj) => JSON.stringify(obj),
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isArray: Array.isArray,
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isBoolean: (val) => typeof val === "boolean",
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isNull: (val) => val === null,
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isNullOrUndefined: (val) => val == null,
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isNumber: (val) => typeof val === "number",
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isString: (val) => typeof val === "string",
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isSymbol: (val) => typeof val === "symbol",
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isUndefined: (val) => val === undefined,
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isRegExp: (val) => val instanceof RegExp,
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isDate: (val) => val instanceof Date,
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isError: (val) => val instanceof Error,
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isFunction: (val) => typeof val === "function",
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isObject: (val) => val !== null && typeof val === "object",
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isPrimitive: (val) => {
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return (
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val === null ||
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typeof val === "boolean" ||
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typeof val === "number" ||
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typeof val === "string" ||
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typeof val === "symbol" ||
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typeof val === "undefined"
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);
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},
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};
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export default util;
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