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¿Cómo soluciono el error '.has no es una función' cuando uso JavaScript Map?

Tengo el siguiente código que intenta establecer un valor en un mapa:

 class Trie { constructor () { this.trie = new Map() } insert(word) { let current = this.trie for (let alpha of word) { if (!current.has(alpha)) current.set(alpha, []) current = current.get(alpha) } current.word = word } } let trie = new Trie() trie.insert('test') console.log(trie.trie)

Cuando intento ejecutarlo, aparece el error .has is not a function . ¿Que me estoy perdiendo aqui?

about 4 years ago · Juan Pablo Isaza
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Está reasignando current a un valor que no es de mapa dentro del bucle, por lo que en iteraciones posteriores, current.has no funcionará. Parece que necesita cambiar el [] a un new Map en su lugar.

 class Trie { constructor () { this.trie = new Map() } insert(word) { let current = this.trie for (let alpha of word) { if (!current.has(alpha)) current.set(alpha, new Map()) current = current.get(alpha) } current.word = word } } let trie = new Trie() trie.insert('test') console.log([...trie.trie])

ingrese la descripción de la imagen aquí

about 4 years ago · Juan Pablo Isaza Report
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