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feat(codemode): native coercion parity in interpreter (#37608)

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Aiden Cline 2026-07-18 12:01:10 -05:00 • committed by GitHub
commit 5f437a09b0
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10 changed files with 323 additions and 48 deletions
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15
packages/codemode/src/stdlib/value.ts
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@ -61,10 +61,19 @@ export const coerceToString = (value: unknown): string => {
export const coerceToNumber = (value: unknown): number => {
if (value instanceof CodeModeDate) return value.time
if (isCodeModeValue(value)) return Number.NaN
return value !== null && typeof value === "object" && !Array.isArray(value) ? Number.NaN : Number(value)
// Arrays coerce through our own string coercion: host Number(array) joins with host
// ToPrimitive, which throws on the null-prototype objects the interpreter produces.
if (Array.isArray(value)) return Number(coerceToString(value))
return value !== null && typeof value === "object" ? Number.NaN : Number(value)
}
export const invokeCoercion = (ref: CoercionFunction, args: Array<unknown>, node: AstNode): unknown => {
// Native: Number() is 0 and String() is "", unlike their undefined-argument forms; the
// other coercers match native through the undefined-argument path below.
if (args.length === 0) {
if (ref.name === "Number") return 0
if (ref.name === "String") return ""
}
const raw = args[0]
// Error values are plain SafeObjects; the boundedData path below would strip their brand.
if (ref.name === "String" && errorBrandName(raw) !== undefined) return coerceToString(raw)
@ -72,12 +81,16 @@ export const invokeCoercion = (ref: CoercionFunction, args: Array<unknown>, node
if (ref.name === "Boolean") return true
if (ref.name === "Number") return coerceToNumber(raw)
if (ref.name === "String") return coerceToString(raw)
if (ref.name === "isFinite") return Number.isFinite(coerceToNumber(raw))
if (ref.name === "isNaN") return Number.isNaN(coerceToNumber(raw))
if (ref.name === "parseInt") return parseInt(coerceToString(raw))
return parseFloat(coerceToString(raw))
}
const value = boundedData(raw, `${ref.name} input`)
if (ref.name === "Number") return coerceToNumber(value)
if (ref.name === "Boolean") return Boolean(value)
if (ref.name === "isFinite") return Number.isFinite(coerceToNumber(value))
if (ref.name === "isNaN") return Number.isNaN(coerceToNumber(value))
if (ref.name === "parseInt") {
const radix = args[1]
if (radix !== undefined && typeof radix !== "number") {