36 lines
742 B
JavaScript
36 lines
742 B
JavaScript
export function compose(...funcs) {
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if (funcs.length === 0) {
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return arg => arg
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}
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if (funcs.length === 1) {
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return funcs[0]
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}
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return funcs.reduce((a, b) => (...args) => a(b(...args)))
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}
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export function fastApply(holder, fn, args) {
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if (holder || args.length > 5) {
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return fn.apply(holder, args);
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}
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if (0 === args.length) {
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return fn();
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}
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if (1 === args.length) {
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return fn(args[0]);
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}
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if (2 === args.length) {
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return fn(args[0], args[1]);
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}
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if (3 === args.length) {
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return fn(args[0], args[1], args[2]);
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}
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if (4 === args.length) {
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return fn(args[0], args[1], args[2], args[3]);
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}
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if (5 === args.length) {
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return fn(args[0], args[1], args[2], args[3], args[4]);
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}
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}
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