31 lines
972 B
Plaintext
31 lines
972 B
Plaintext
function message(msg, actual, ...types) {
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if (types.length > 2) {
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const last = types.pop();
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msg += `one of type ${types.join(', ')}, or ${last}.`;
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}
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else if (types.length === 2) {
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msg += `one of type ${types[0]} or ${types[1]}.`;
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}
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else {
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msg += `of type ${types[0]}.`;
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}
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if (actual == null) {
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msg += ` Received ${actual}`;
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}
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else if (typeof actual === 'function' && actual.name) {
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msg += ` Received function ${actual.name}`;
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}
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else if (typeof actual === 'object' && actual != null) {
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if (actual.constructor && actual.constructor.name) {
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msg += ` Received an instance of ${actual.constructor.name}`;
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}
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}
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return msg;
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}
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export default (actual, ...types) => {
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return message('Key must be ', actual, ...types);
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};
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export function withAlg(alg, actual, ...types) {
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return message(`Key for the ${alg} algorithm must be `, actual, ...types);
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}
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