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fix: Remove default esModuleInterop option from ts-node and preprocessor #8143

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merged 47 commits into from Aug 10, 2020

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chrisbreiding
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@chrisbreiding chrisbreiding commented Jul 31, 2020

User facing changelog

  • BREAKING CHANGE: For TypeScript compilation of spec/support files and the plugins file, the esModuleInterop option is no longer coerced to true. If you need to utilize esModuleInterop, set it in your tsconfig.json.

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@flotwig flotwig mentioned this pull request Aug 4, 2020
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@jennifer-shehane
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@chrisbreiding Nice. I would love links to any docs PRs that are needed or notes you would add for the Migration Guide. The below was previously mentioned for the Migration guide

When a user doesn't have a tsconfig.json file or define esModuleInterop: true, Cypress didn't fail in 4.x, but it might fail after 5.0. Because Cypress now uses the default esModuleInterop setting of TypeScript.

I used 'might', because it wouldn't fail when a user didn't use import syntax.
#7808 (comment)

But providing an example of before / after would be great.

@chrisbreiding chrisbreiding marked this pull request as ready for review August 4, 2020 14:24
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@jennifer-shehane Submitted documentation PR: cypress-io/cypress-documentation#3053

@brian-mann brian-mann changed the base branch from tr-49-default-preprocessor-webpack to v5.0-release August 10, 2020 20:58
…esmodule-interop-default

# Conflicts:
#	packages/server/__snapshots__/1_typescript_spec_support_spec.ts.js
#	packages/server/package.json
#	yarn.lock
@brian-mann brian-mann merged commit daeab10 into v5.0-release Aug 10, 2020
@chrisbreiding chrisbreiding deleted the tr-132-change-esmodule-interop-default branch April 5, 2022 18:29
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6 participants