mirror of https://github.com/nodejs/node.git
18 lines
633 B
JavaScript
18 lines
633 B
JavaScript
'use strict';
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// Flags: --expose-internals
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const common = require('../common');
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const assert = require('assert');
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const { emitExperimentalWarning } = require('internal/util');
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// This test ensures that the emitExperimentalWarning in internal/util emits a
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// warning when passed an unsupported feature and that it simply returns
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// when passed the same feature multiple times.
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process.on('warning', common.mustCall((warning) => {
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assert.match(warning.message, /is an experimental feature/);
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}, 2));
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emitExperimentalWarning('feature1');
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emitExperimentalWarning('feature1'); // should not warn
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emitExperimentalWarning('feature2');
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