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feat: add extends field support #6

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feat: add extends field support #6

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633a84d
feat: add extends field support
dudiq May 24, 2022
529744b
fix: merge compiler options only
dudiq May 25, 2022
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19 changes: 16 additions & 3 deletions src/index.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -89,19 +89,32 @@ async function load(resolveFrom: string, options, logger): Promise<PathMapType>
return result;
}

async function loadConfig(options, resolveFrom) {
async function loadConfigByName(names, options, resolveFrom) {
let result = await loadConfigUtil(
options.inputFS,
resolveFrom,
['tsconfig.json', 'tsconfig.js'],
names,
options.projectRoot
);
if (!result?.config) {
throw new Error(`Missing or invalid tsconfig.json in project root (${options.projectRoot})`);
throw new Error(`Missing or invalid ${names.join(',')} in project root (${options.projectRoot})`);
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@zachbryant zachbryant May 24, 2022

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nit: add space after comma

}
return result.config;
}

async function loadConfig(options, resolveFrom) {
let baseConfig = await loadConfigByName(['tsconfig.json', 'tsconfig.js'], options, resolveFrom)
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@zachbryant zachbryant May 26, 2022

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The naming of this variable is ambiguous. I suggest childConfig for this line and parentConfig in place of extendsConfig

if (!baseConfig.extends) {
return baseConfig
}
let extendsConfig = await loadConfigByName([baseConfig.extends], options, resolveFrom)

return {
...baseConfig,
...extendsConfig
}
}

/** Populate a map with any paths from tsconfig.json starting from baseUrl */
async function loadTsPaths(resolveFrom: string, options, logger): Promise<PathMapType> {
let config = await loadConfig(options, resolveFrom);
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