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Allow any type of asset fields for the isERC20Asset type guard (#322)

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Matthew Russell 2022-04-27 10:35:30 -07:00 committed by GitHub
parent 448e0ec78f
commit 8ebb2ee81c
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1 changed files with 3 additions and 1 deletions
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apps/trading/lib/assets.ts
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@ -7,8 +7,10 @@ export interface ERC20Asset extends AssetFields {
}; };
} }
type UnknownAssset = Pick<AssetFields, '__typename' | 'source'>;
// Type guard to ensure an asset is an ERC20 token // Type guard to ensure an asset is an ERC20 token
export const isERC20Asset = (asset: AssetFields): asset is ERC20Asset => { export const isERC20Asset = (asset: UnknownAssset): asset is ERC20Asset => {
if (asset.source.__typename === 'ERC20') { if (asset.source.__typename === 'ERC20') {
return true; return true;
} }