25 lines
819 B
TypeScript
25 lines
819 B
TypeScript
import { isString } from '@polymech/core/primitives'
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export const flatten = (value: string | string[] | undefined): string[] => {
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let initialArray: string[]
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if (typeof value === "string") {
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initialArray = value.split(",")
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} else if (Array.isArray(value)) {
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initialArray = value.filter((item): item is string => typeof item === "string")
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} else {
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initialArray = []
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}
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// 2. Split on commas within each array element, then trim
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const expanded = initialArray.reduce<string[]>((acc, str) => {
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const parts = str.split(",").map((s) => s.trim())
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return acc.concat(parts)
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}, [])
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const filtered = expanded.filter((item) => {
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if (item === "true" || item === "false") return false
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if (!isNaN(Number(item))) return false
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return true
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})
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return Array.from(new Set(filtered));
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} |