69 function doEmitWarning(warning) {  argument
70   process.emit('warning', warning);
74 function onWarning(warning) {  argument
75   if (!(warning instanceof Error)) return;
76   const isDeprecation = warning.name === 'DeprecationWarning';
81   if (warning.code)
82     msg += `[${warning.code}] `;
83   if (trace && warning.stack) {
84     msg += `${warning.stack}`;
87       typeof warning.toString === 'function' ?
88         `${warning.toString()}` :
89         ErrorPrototypeToString(warning);
91   if (typeof warning.detail === 'string') {
92     msg += `\n${warning.detail}`;
97     msg += `\n(Use \`${argv0} ${flag} ...\` to show where the warning ` +
111 function emitWarning(warning, type, code, ctor) {  argument
118     type = type.type || 'Warning';
122     type = 'Warning';
132   if (typeof warning === 'string') {
133     warning = createWarningObject(warning, type, code, ctor, detail);
134   } else if (!(warning instanceof Error)) {
135     throw new ERR_INVALID_ARG_TYPE('warning', ['Error', 'string'], warning);
137   if (warning.name === 'DeprecationWarning') {
141       throw warning;
143   process.nextTick(doEmitWarning, warning);
146 function emitWarningSync(warning) {  argument
147   process.emit('warning', createWarningObject(warning));
150 function createWarningObject(warning, type, code, ctor, detail) {  argument
151   assert(typeof warning === 'string');
157   warning = new Error(warning);
159   warning.name = String(type || 'Warning');
160   if (code !== undefined) warning.code = code;
161   if (detail !== undefined) warning.detail = detail;
162   ErrorCaptureStackTrace(warning, ctor || process.emitWarning);
163   return warning;