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30 lines
872 B
30 lines
872 B
9 years ago
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// Flags: --no-warnings
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// The flag suppresses stderr output but the warning event will still emit
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'use strict';
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const common = require('../common');
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const assert = require('assert');
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const util = require('util');
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process.on('warning', common.mustCall((warning) => {
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assert(warning);
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assert(/^(Warning|CustomWarning)/.test(warning.name));
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assert(warning.message, 'A Warning');
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}, 3));
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process.emitWarning('A Warning');
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process.emitWarning('A Warning', 'CustomWarning');
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function CustomWarning() {
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Error.call(this);
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this.name = 'CustomWarning';
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this.message = 'A Warning';
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Error.captureStackTrace(this, CustomWarning);
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}
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util.inherits(CustomWarning, Error);
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process.emitWarning(new CustomWarning());
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// TypeError is thrown on invalid output
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assert.throws(() => process.emitWarning(1), TypeError);
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assert.throws(() => process.emitWarning({}), TypeError);
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