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fix(ngcc): do not emit ES2015 code in ES5 files (#33514)

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Previously, ngcc's `Renderer` would add some constants in the processed
files which were emitted as ES2015 code (e.g. `const` declarations).
This would result in invalid ES5 generated code that would break when
run on browsers that do not support the emitted format.

This commit fixes it by adding a `printStatement()` method to
`RenderingFormatter`, which can convert statements to JavaScript code in
a suitable format for the corresponding `RenderingFormatter`.
Additionally, the `translateExpression()` and `translateStatement()`
ngtsc helper methods are augmented to accept an extra hint to know
whether the code needs to be translated to ES5 format or not.

Fixes #32665

PR Close #33514
This commit is contained in:
George Kalpakas
2019-11-04 19:29:01 +02:00
committed by Kara Erickson
parent 21bd8c9a2e
commit 06e36e5972
17 changed files with 222 additions and 55 deletions
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2
integration/ngcc/test.sh
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@ -95,7 +95,7 @@ assertSucceeded "Expected 'ngcc' to log 'Compiling'."
grep "const ɵMatTable_BaseFactory = ɵngcc0.ɵɵgetInheritedFactory(MatTable);" node_modules/@angular/material/esm2015/table.js
assertSucceeded "Expected 'ngcc' to generate a base factory for 'MatTable' in '@angular/material' (esm2015)."
grep "const ɵMatTable_BaseFactory = ɵngcc0.ɵɵgetInheritedFactory(MatTable);" node_modules/@angular/material/esm5/table.es5.js
grep "var ɵMatTable_BaseFactory = ɵngcc0.ɵɵgetInheritedFactory(MatTable);" node_modules/@angular/material/esm5/table.es5.js
assertSucceeded "Expected 'ngcc' to generate a base factory for 'MatTable' in '@angular/material' (esm5)."