| 1 | const deprecated = (msg, log = console.log) => function(target, prop, descriptor) {
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| 2 | const signature = `${target.constructor.name}#${prop.toString()}`;
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| 3 | const fn = descriptor.value;
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| 4 | if (typeof fn !== "function") {
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| 5 | throw new Error(`${signature} is not a function`);
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| 6 | }
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| 7 | descriptor.value = function() {
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| 8 | log(`DEPRECATED ${signature}: ${msg || "will be removed soon"}`);
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| 9 | return fn.apply(this, arguments);
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| 10 | };
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| 11 | return descriptor;
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| 12 | };
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| 13 | export {
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| 14 | deprecated
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| 15 | };
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