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refactor(compiler): remove support for TypeScript 3.9 (#39313)

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This commit removes TypeScript 3.9 support.

BREAKING CHANGE:

TypeScript 3.9 is no longer supported, please upgrade to TypeScript 4.0.

PR Close #39313
This commit is contained in:
Andrew Kushnir
2020-10-16 17:48:44 -07:00
parent 41c2228d49
commit f5a3e44e9d
3 changed files with 11 additions and 6 deletions
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packages/compiler-cli/src/typescript_support.ts
+9 -4
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@@ -11,13 +11,19 @@ import {compareVersions} from './diagnostics/typescript_version';
/**
* Minimum supported TypeScript version
* ∀ supported typescript version v, v >= MIN_TS_VERSION
*
* Note: this check is disabled in g3, search for
* `angularCompilerOptions.disableTypeScriptVersionCheck` config param value in g3.
*/
const MIN_TS_VERSION = '3.9.2';
const MIN_TS_VERSION = '4.0.0';
/**
* Supremum of supported TypeScript versions
* ∀ supported typescript version v, v < MAX_TS_VERSION
* MAX_TS_VERSION is not considered as a supported TypeScript version
*
* Note: this check is disabled in g3, search for
* `angularCompilerOptions.disableTypeScriptVersionCheck` config param value in g3.
*/
const MAX_TS_VERSION = '4.1.0';
@@ -36,9 +42,8 @@ export function restoreTypeScriptVersionForTesting(): void {
}
/**
* Checks whether a given version ∈ [minVersion, maxVersion[
* An error will be thrown if the following statements are simultaneously true:
* - the given version ∉ [minVersion, maxVersion[,
* Checks whether a given version ∈ [minVersion, maxVersion[.
* An error will be thrown when the given version ∉ [minVersion, maxVersion[.
*
* @param version The version on which the check will be performed
* @param minVersion The lower bound version. A valid version needs to be greater than minVersion