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40 lines
1.1 KiB
JavaScript

function requireUtil() {
try {
// eslint-disable-next-line no-restricted-modules
return require("util");
} catch (e) {
return null;
}
}
// for v10.12.0+
function lookupCustomInspectSymbol() {
return Symbol.for("nodejs.util.inspect.custom");
}
// for older node environments
function tryReadingCustomSymbolFromUtilInspect(options) {
const _requireUtil = options.requireUtil || requireUtil;
const util = _requireUtil();
return util ? util.inspect.custom : null;
}
exports.getUtilInspect = function getUtilInspect(fallback, options = {}) {
const _requireUtil = options.requireUtil || requireUtil;
const util = _requireUtil();
return function inspect(value, showHidden, depth) {
return util ? util.inspect(value, showHidden, depth) : fallback(value);
};
};
exports.getCustomInspectSymbol = function getCustomInspectSymbol(options = {}) {
const _lookupCustomInspectSymbol =
options.lookupCustomInspectSymbol || lookupCustomInspectSymbol;
// get custom inspect symbol for node environments
return (
_lookupCustomInspectSymbol() ||
tryReadingCustomSymbolFromUtilInspect(options)
);
};