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| author | Richard Musiol <mail@richard-musiol.de> | 2020-10-11 10:23:45 +0200 |
|---|---|---|
| committer | Richard Musiol <neelance@gmail.com> | 2020-10-21 13:19:35 +0000 |
| commit | 54c0237346adfc2cac7bbebba80d652227ab6ea5 (patch) | |
| tree | 21dcf1c45f990cc6583d2201249f110c4d918055 /misc | |
| parent | 9848e93cb76f068b97e8ea342c33cc09b553790f (diff) | |
| download | go-54c0237346adfc2cac7bbebba80d652227ab6ea5.tar.gz go-54c0237346adfc2cac7bbebba80d652227ab6ea5.zip | |
misc/wasm: improve error message if javascript polyfills are required
wasm_exec.js expects that either "require" is available or that the
globals "crypto", "TextEncoder" and "TextDecoder" are already defined.
Report a better error message if this is not the case, suggesting the
use of a polyfill.
Updates #41482
Change-Id: I5473cae15c98ae42e39f5928245b7762e7a5a8bf
Reviewed-on: https://go-review.googlesource.com/c/go/+/261357
Trust: Richard Musiol <neelance@gmail.com>
Run-TryBot: Richard Musiol <neelance@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Diffstat (limited to 'misc')
| -rw-r--r-- | misc/wasm/wasm_exec.js | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/misc/wasm/wasm_exec.js b/misc/wasm/wasm_exec.js index 06b6062a2e..3ea03c45b7 100644 --- a/misc/wasm/wasm_exec.js +++ b/misc/wasm/wasm_exec.js @@ -102,7 +102,7 @@ } } - if (!global.crypto) { + if (!global.crypto && global.require) { const nodeCrypto = require("crypto"); global.crypto = { getRandomValues(b) { @@ -110,6 +110,9 @@ }, }; } + if (!global.crypto) { + throw new Error("global.crypto is not available, polyfill required (getRandomValues only)"); + } if (!global.performance) { global.performance = { @@ -120,13 +123,19 @@ }; } - if (!global.TextEncoder) { + if (!global.TextEncoder && global.require) { global.TextEncoder = require("util").TextEncoder; } + if (!global.TextEncoder) { + throw new Error("global.TextEncoder is not available, polyfill required"); + } - if (!global.TextDecoder) { + if (!global.TextDecoder && global.require) { global.TextDecoder = require("util").TextDecoder; } + if (!global.TextDecoder) { + throw new Error("global.TextDecoder is not available, polyfill required"); + } // End of polyfills for common API. |