Upgrade ESLint to v10

[Copilot]

Upgrade ESLint from v9 to v10 and update related packages for compatibility, similar to Azure/avocado#271.

• Dependencies: eslint → ^10.0.0, @eslint/js → ^10.0.0, typescript-eslint → ^8.56.0, added globals ^17.3.0 (previously transitive via @eslint/eslintrc, removed in v10)
• no-useless-assignment fix (src/lib/util/utils.ts): Refactored parseContent() to early-return instead of assigning to a mutable let result
• preserve-caught-error suppression (eslint.config.js): New v10 recommended rule requiring { cause } on re-thrown errors. Disabled because the project targets ES2017 and TypeScript lacks the ErrorOptions type at that target level. Consistent with the existing pattern of suppressed rules from the tslint migration.
• Node engine bump (package.json): Updated engines.node from >=20.0.0 to >=20.19.0 to align with ESLint v10's engine requirement (^20.19.0 || ^22.13.0 || >=24)

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[Copilot]

Pull request overview

Upgrades the repo’s linting toolchain to ESLint v10 and aligns related TypeScript ESLint packages/config, with a small refactor to satisfy updated lint rules.

Changes:

• Bump eslint / @eslint/js to v10 and typescript-eslint to ^8.56.0; add globals as an explicit devDependency.
• Refactor parseContent() to use early returns (avoids no-useless-assignment).
• Disable ESLint v10’s preserve-caught-error rule in eslint.config.js due to ES2017 / typing constraints.

Reviewed changes

Copilot reviewed 3 out of 4 changed files in this pull request and generated 1 comment.

File	Description
src/lib/util/utils.ts	Refactors parseContent() control flow to satisfy updated linting rules.
package.json	Updates ESLint-related devDependencies and adds globals.
package-lock.json	Locks upgraded ESLint/TypeScript-ESLint dependency graph.
eslint.config.js	Disables new v10 recommended rule preserve-caught-error with rationale.

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[mikeharder]

@copilot apply changes based on the comments in this thread

[Copilot]

@copilot apply changes based on the comments in this thread

Applied the Node engine bump in 55425b5 — engines.node updated from >=20.0.0 to >=20.19.0 to match ESLint v10's requirements.