| 1 | /**
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| 2 | * Method property decorator factory. Augments original method with
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| 3 | * deprecation message (via console), shown when method is invoked.
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| 4 | * Accepts optional message arg. Throws error if assigned property
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| 5 | * is not a function.
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| 6 | *
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| 7 | * @param msg - deprecation message
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| 8 | */
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| 9 | export const deprecated = (msg, log = console.log) => function (target, prop, descriptor) {
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| 10 | const signature = `${target.constructor.name}#${prop.toString()}`;
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| 11 | const fn = descriptor.value;
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| 12 | if (typeof fn !== "function") {
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| 13 | throw new Error(`${signature} is not a function`);
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| 14 | }
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| 15 | descriptor.value = function () {
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| 16 | log(`DEPRECATED ${signature}: ${msg || "will be removed soon"}`);
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| 17 | return fn.apply(this, arguments);
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| 18 | };
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| 19 | return descriptor;
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| 20 | };
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