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perpare for more compact bit operations in JS (#16728)

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flywind 2021-01-19 07:57:16 -06:00 • committed by GitHub
commit a0fddfecd4
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2 changed files with 20 additions and 7 deletions
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lib/std/private/jsutils.nim Normal file
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@ -0,0 +1,12 @@
when defined(js):
type
ArrayBuffer* = ref object of JsRoot
Float64Array* = ref object of JsRoot
Uint32Array* = ref object of JsRoot
func newArrayBuffer*(n: int): ArrayBuffer {.importjs: "new ArrayBuffer(#)".}
func newFloat64Array*(buffer: ArrayBuffer): Float64Array {.importjs: "new Float64Array(#)".}
func newUint32Array*(buffer: ArrayBuffer): Uint32Array {.importjs: "new Uint32Array(#)".}
func `[]`*(arr: Uint32Array, i: int): uint32 {.importjs: "#[#]".}
func `[]=`*(arr: Float64Array, i: int, v: float) {.importjs: "#[#] = #".}