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WebAssembly.compile()

Baseline Widely available *

This feature is well established and works across many devices and browser versions. Its been available across browsers since 2017 10.

* Some parts of this feature may have varying levels of support.

**WebAssembly.compile()** WebAssembly WebAssembly.Module . . WebAssembly.instantiate () .

In this article

Syntax

js
WebAssembly.compile(bufferSource);

Parameters

bufferSource

.wasm typed array ArrayBuffer.

Return value

Promise WebAssembly.Module .

Exceptions

Examples

compile() simple.wasm postMessage() worker .

js
var worker = new Worker("wasm_worker.js");

fetch("simple.wasm")
  .then((response) => response.arrayBuffer())
  .then((bytes) => WebAssembly.compile(bytes))
  .then((mod) => worker.postMessage(mod));

: WebAssembly.compileStreaming() . compile() .

Specification
WebAssembly JavaScript Interface
# dom-webassembly-compile

See also

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  1. WebAssembly
  2. Guides
  4. Compiling WebAssembly
    1. C/C++
    2. Compiling an existing C module to WebAssembly
    3. Rust
  5. WebAssembly language
    2. Converting WebAssembly text format
    3. (Exported WebAssembly)
    4. JavaScript builtins
    5. Imported global string constants
  6. JavaScript API guide
    1. JavaScript API
  7. Reference
  8. JavaScript
    1. WebAssembly
      1. WebAssembly.compile()
      2. WebAssembly.compileStreaming()
      3. WebAssembly.instantiate()
      4. WebAssembly.instantiateStreaming()
      5. WebAssembly.promising()
      6. WebAssembly.validate()
    2. WebAssembly.Global
      1. Global()
      2. value
      3. valueOf()
    3. WebAssembly.Instance
      1. WebAssembly.Instance.prototype.exports
      2. WebAssembly.Instance() constructor
    4. WebAssembly.Memory
      1. WebAssembly.Memory.prototype.buffer
      2. WebAssembly.Memory.prototype.grow()
      3. WebAssembly.Memory() constructor
    5. WebAssembly.Module
      1. WebAssembly.Module.customSections()
      2. WebAssembly.Module.exports()
      3. WebAssembly.Module.imports()
      4. WebAssembly.Module() constructor
    6. WebAssembly.Suspending
      1. WebAssembly.Suspending()
    7. WebAssembly.Table
      1. WebAssembly.Table.prototype.get()
      2. WebAssembly.Table.prototype.grow()
      3. WebAssembly.Table.prototype.length
      4. WebAssembly.Table.prototype.set()
      5. WebAssembly.Table() constructor
    8. WebAssembly.Tag
      1. WebAssembly.Tag.prototype.type()
      2. WebAssembly.Tag() constructor
    9. WebAssembly.Exception
      1. WebAssembly.Exception constructor
      2. WebAssembly.Exception.prototype.getArg()
      3. WebAssembly.Exception.prototype.is()
      4. WebAssembly.Exception.prototype.stack
    10. WebAssembly.CompileError
      1. WebAssembly.CompileError() constructor
    11. WebAssembly.LinkError
      1. WebAssembly.LinkError() constructor
    12. WebAssembly.RuntimeError
      1. WebAssembly.RuntimeError() constructor
    13. WebAssembly.SuspendError
      1. WebAssembly.SuspendError() constructor
  9. Value types
    1. i32
    2. i64
    3. f32
    4. f64
    5. v128
    6. funcref
    7. exnref
    8. externref
  10. Definitions
    1. Types
      1. func
    2. data
    3. elem
    4. global
    5. memory
    6. table
    7. tag
  11. Instructions
    1. Control flow
      1. block
      2. br
      3. br_if
      4. br_table
      5. call
      6. drop
      7. end
      8. if...else
      9. loop
      10. nop
      11. return
      12. select
      13. unreachable
    2. Data
      1. drop
    3. Elem
      1. drop
    4. Exception handling
      1. throw
      2. throw_ref
      3. try_table
        1. catch
        2. catch_all
        3. catch_all_ref
        4. catch_ref
    5. Memory
      1. copy
      2. fill
      3. grow
      4. init
      5. load
      6. size
      7. store
    6. Numeric
      1. abs
      2. add
      3. and
      4. ceil
      5. clz
      6. const
      7. convert
      8. copysign
      9. ctz
      10. demote
      11. div
      12. eq
      13. eqz
      14. extend
      15. extend8_s
      16. extend16_s
      17. extend32_s
      18. floor
      19. ge
      20. ge_s
      21. ge_u
      22. gt
      23. gt_s
      24. gt_u
      25. le
      26. le_s
      27. le_u
      28. lt
      29. lt_s
      30. lt_u
      31. max
      32. min
      33. mul
      34. ne
      35. nearest
      36. neg
      37. or
      38. popcnt
      39. promote_32
      40. reinterpret
      41. rem
      42. rotl
      43. rotr
      44. shl
      45. shr_s
      46. shr_u
      47. sqrt
      48. sub
      49. trunc
      50. trunc_f32_s
      51. trunc_f32_u
      52. trunc_f64_s
      53. trunc_f64_u
      54. wrap_i64
      55. xor
    7. SIMD
      1. Arithmetic
        1. add_sat_s
        2. add_sat_u
        3. avgr_u
        4. dot_i16x8_s
        5. extadd_pairwise_i8x16_s
        6. extadd_pairwise_i8x16_u
        7. extadd_pairwise_i16x8_s
        8. extadd_pairwise_i16x8_u
        9. extmul_high_i8x16_s
        10. extmul_high_i8x16_u
        11. extmul_high_i16x8_s
        12. extmul_high_i16x8_u
        13. extmul_high_i32x4_s
        14. extmul_high_i32x4_u
        15. extmul_low_i8x16_s
        16. extmul_low_i8x16_u
        17. extmul_low_i16x8_s
        18. extmul_low_i16x8_u
        19. extmul_low_i32x4_s
        20. extmul_low_i32x4_u
        21. max_s
        22. max_u
        23. min_s
        24. min_u
        25. pmax
        26. pmin
        27. q15mulr_sat_s
        28. sub_sat_s
        29. sub_sat_u
      2. Bitwise
        1. all_true
        2. andnot
        3. any_true
        4. bitmask
        5. bitselect
        6. not
      3. Conversion
        1. convert_i32x4_s
        2. convert_i32x4_u
        3. convert_low_i32x4_s
        4. convert_low_i32x4_u
        5. demote_f64x2_zero
        6. extend_high_i8x16_s
        7. extend_high_i8x16_u
        8. extend_high_i16x8_s
        9. extend_high_i16x8_u
        10. extend_high_i32x4_s
        11. extend_high_i32x4_u
        12. extend_low_i8x16_s
        13. extend_low_i8x16_u
        14. extend_low_i16x8_s
        15. extend_low_i16x8_u
        16. extend_low_i32x4_s
        17. extend_low_i32x4_u
        18. narrow_i16x8_s
        19. narrow_i16x8_u
        20. narrow_i32x4_s
        21. narrow_i32x4_u
        22. promote_low_f32x4
        23. replace_lane
        24. shuffle
        25. splat
        26. swizzle
        27. trunc_sat_f32x4_s
        28. trunc_sat_f32x4_u
        29. trunc_sat_f64x2_s_zero
        30. trunc_sat_f64x2_u_zero
      4. Extract
        1. extract_lane
        2. extract_lane_s
        3. extract_lane_u
      5. Load and store
        1. load
        2. load8_lane
        3. load8_splat
        4. load8x8_s
        5. load8x8_u
        6. load16_lane
        7. load16_splat
        8. load16x4_s
        9. load16x4_u
        10. load32_lane
        11. load32_splat
        12. load32_zero
        13. load32x2_s
        14. load32x2_u
        15. load64_lane
        16. load64_splat
        17. load64_zero
        18. store
        19. store8_lane
        20. store16_lane
        21. store32_lane
        22. store64_lane
    8. Table
      1. copy
      2. fill
      3. get
      4. grow
      5. init
      6. set
      7. size
    9. Variables
      1. global.get
      2. global.set
      3. local
      4. local.get
      5. local.set
      6. local.tee
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