defaults.ts•1.22 kB
import type {SchemaObjCxt} from ".."
import {_, getProperty, stringify} from "../codegen"
import {checkStrictMode} from "../util"
export function assignDefaults(it: SchemaObjCxt, ty?: string): void {
const {properties, items} = it.schema
if (ty === "object" && properties) {
for (const key in properties) {
assignDefault(it, key, properties[key].default)
}
} else if (ty === "array" && Array.isArray(items)) {
items.forEach((sch, i: number) => assignDefault(it, i, sch.default))
}
}
function assignDefault(it: SchemaObjCxt, prop: string | number, defaultValue: unknown): void {
const {gen, compositeRule, data, opts} = it
if (defaultValue === undefined) return
const childData = _`${data}${getProperty(prop)}`
if (compositeRule) {
checkStrictMode(it, `default is ignored for: ${childData}`)
return
}
let condition = _`${childData} === undefined`
if (opts.useDefaults === "empty") {
condition = _`${condition} || ${childData} === null || ${childData} === ""`
}
// `${childData} === undefined` +
// (opts.useDefaults === "empty" ? ` || ${childData} === null || ${childData} === ""` : "")
gen.if(condition, _`${childData} = ${stringify(defaultValue)}`)
}