fix(sdk-lib-mpc): use @bitgo/wasm-mps/web in browser to fix EdDSA MPCv2 DKG TypeError#8643
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fix(sdk-lib-mpc): use @bitgo/wasm-mps/web in browser to fix EdDSA MPCv2 DKG TypeError#8643bitgo-ai-agent-dev[bot] wants to merge 1 commit intomasterfrom
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In browsers (webpack), importing @bitgo/wasm-mps resolves to the --target bundler ESM build which has a race condition between webpack's async WASM instantiation and __wbg_set_wasm being called. This causes wasm.ed25519_dkg_round0_process to be undefined when initDkg() runs. Mirror the ECDSA pattern in ecdsa-dkls/dkg.ts: detect browser via `typeof window !== 'undefined'` (excluding Electron via window.process checks), then use @bitgo/wasm-mps/web which exposes an explicit init() function — guaranteed ready after await. Adds a local .d.ts shim for @bitgo/wasm-mps/web until WCI-250 publishes the ./web subpath export with its own types. Ticket: WCI-251
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johnoliverdriscoll
approved these changes
Apr 28, 2026
margueriteblair
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Apr 28, 2026
mohammadalfaiyazbitgo
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Apr 29, 2026
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Summary
Background
The existing @bitgo/wasm-mps builds are not browser-safe:
wasm.ed25519_dkg_round0_process is not a function
not a function
The --target web build loads wasm via fetch() and exposes an explicit init(), eliminating both failure modes.
Linear
Ticket: WCI-251
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